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All Published Papers
  • LIST OF PAPERS PUBLISHED IN INTERNATIONAL JOURNALS  
       
      AD Vyas, AJ Trivedi, Calla OPN, SS Rana and G Raju

      “Passive Microwave Remote Sensing of Soil Moisture”
      International Journal of Remote Sensing, UK
      Vol. 6, No.7, pp. 1153-1162 (1985).

      AD Vyas, AJ Trivedi, Calla OPN, SS Rana and G Raju

       

      Passive Microwave Remote Sensing of Soil Moisture” International Journal of Remote Sensing, UK

      Vol. 6, No.7, pp. 1153-1162 (1985).

      Raju G and Calla OPN

       

      “Sea Surface Emission Characteristics as Viewed by the Spin-Scanned Satellite Microwave Radiometer (SAMIR) On-board Bhaskara”

      IEEE Transactions on “Geoscience and Remote Sensing” a publication of the IEEE Geoscience and Remote Sensing Society, Vol GE-23, No.6, 1985 pp. 933.

      AD Vyas, AJ Trivedi, OPN Calla, SS Rana and SB Sharma

       

      “Remote Sensing of Soil Moisture Content Over Bare Soil at Microwave Frequencies”

      International Journal of Remote Sensing, 1988, Vol.9, No.2, pp. 341-347.

      AD Vyas, AJ Trivedi, Calla OPN, SS Rana, SB Sharma and AB Vora

       

      “Experimental Data for Separation of Vegetation and Soil and Estimation of Soil Moisture using Passive Microwaves”

      Int. Journal of Remote Sensing, 1990 Vol. 11, No.8, pp. 1421-1438.

      AK Sen, PK Karmakar, A Mitra, AK Dev Gupta, MK Das Gupta, SS Rana and OPN Calla

       

      “Radiometric Studies of Attenuation and Water Vapour Content in Atmosphere at 22.235 GHz over Calcutta”

      Int. J. Atmospheric Environment (Great Britain) Vol. 24 A, No. 7, 1990, pp. 1819-1977.

      AK Sen, TK Das, S Devbarman, PK Karmakar, MK Das Gupta, SS Rana and OPN Calla

       

      “Modelling of the Post Rain Attenuation of Microwave at 22.235 GHz in Relation to Vertical Transport of Water Vapour”

      Int. J. of Remote Sensing (UK), Vol. II, No. 10, 1990, pp. 1819-1977.

      AK Sen, PK Karmakar, S Devbarman, MK Das Gupta, SS Rana and OPN Calla

       

      “Tropospheric Water Vapour Modelling Over Tropical Location by Radiometric Study”

      Int. J. Radio & Space Physics, Vol. 20, October 1991, pp. 347-350.

       
  • LIST OF PAPER PUBLISHED IN THE PROCEEDINGS OF THE CONFERENCES  
       
      Calla OPN

      “Low Noise Amplifier”
      Published in the Conference on Electronics Instrumentation and Communication Technology held at Physical Research Laboratory, Ahmedabad on 23-27 July 1973, pp. 237-251.

      Calla OPN-3

       

      “Microwave Span Space to Kitchen”

      Published in SACSWA Souvenir in 1974.

      Calla OPN, G Raju, SS Rana and S Balasubramanian....

       

      “Utilisation of Passive Microwave Sensors in Agriculture and Hydrology”

      Published in the Symposium on Remote Sensing for Hydrology, Agriculture and Mineral Resources held at SAC, Ahmedabad during 15-17 November 1977.

      Calla OPN, NS Pillai and VH Bora.

       

      “Applications of Active Microwave Remote Sensing for Agriculture and Hydrology”

      Published in the Symposium on Remote Sensing for Hydrology, Agriculture and Mineral Resources held at SAC, Ahmedabad during 15-17 November 1977.

      Calla OPN and G Raju..

       

      “Airborne Microwave Radiometric Imaging System for Earth Resources Survey”

      Published in the Symposium on Remote Sensing for Hydrology, Agriculture and Mineral Resources held at SAC, Ahmedabad during 15-17 November 1977

      Calla OPN “Microwave Sensors (Present and Future)”

      Calla OPN

      “Microwave Sensors (Present and Future)”

      Published in a special issue of proceedings (Engineering Sciences) of Indian Academy of Sciences, Bangalore, Vol.6, Pt.2, June 1983, pp. 109-119.

      N Sivathanu Pillai and Calla OPN

       

      “Study of Solid State Subsystems for Phased Array Radar”

      Published in the Seminar on Radar and Microwave Communication, Dept. of Electronics and Communication Engg., University of Roorkee, Roorkee pp. 220-226.

      AK Bandhopadhyay and Calla OPN..

       

      “Integral Equation of Arbitrary Shape Symmetrical Travelling Wave Linear Antenna”

      Published in the Seminar on Radar and Microwave Communication, Dept. of Electronics and Communication Engg., University of Roorkee, Roorkee pp. 103-109.

      Miss BV Rajeswari and Calla OPN..

       

      “A Brief Survey of Monopulse Techniques”

      Published in the Seminar on Radar and Microwave Communication, Dept. of Electronics and Communication Engg., University of Roorkee, Roorkee pp. 113-130.

      Calla OPN and VH Bora..

       

      “Wide Band Ground Based Scatterometer for Remote Sensing”

      Published in the Proceedings of National Conference on Applications of Microwaves held at University of Jodhpur, Jodhpur on 12-13 March 1981

      Calla OPN and VH Bora-

       

      “Wide Band Ground Based Scatterometer for Remote Sensing”

      Published in the Proceedings of National Conference on Applications of Microwaves held at University of Jodhpur, Jodhpur on 12-13 March 1981

      Calla OPN and NS Pillai

       

      “Active Microwave Sensors for Remote Sensing”

      Published in the Proceedings of National Conference on Applications of Microwaves held at University of Jodhpur, Jodhpur on 12-13 March 1981.

      Calla OPN and PK Bhagat

       

      “Study of Effect of Microwave Radiation (8-18 GHz) on Biological Tissues”

      Published in the Proceedings of National Conference on Applications of Microwaves held at University of Jodhpur, Jodhpur on 12-13 March 1981.

      Calla OPN and G Raju.

       

      “Microwave Radiometry in Medical Applications”

      Published in the Proceedings of National Conference on Applications of Microwaves held at University of Jodhpur, Jodhpur on 12-13 March 1981

      Calla OPN, LP Sinha, G Raju and SS Rana

       

      “Cancer Detection by Microwave Thermography”

      Published in the Proceedings of National Conference on Applications of Microwaves held at University of Jodhpur, Jodhpur on 12-13 March 1981.

      Calla OPN, MN Sonnada, G Raju and S Balasubramanian

       

      “Millimeter Wave Interferometer for Plasma Diagnostics”

      Published in the Proceedings of National Conference on Applications of Microwaves held at University of Jodhpur, Jodhpur on 12-13 March 1981.

      G Raju, SS Rana, S Balasubramanian and Calla OPN

       

      “Significant Results from the Satellite Microwave Radiometer (SAMIR) on-board BHASKARA”

      Published in the Proceedings of National Conference on Applications of Microwaves held at University of Jodhpur, Jodhpur on 12-13 March 1981.

      Calla OPN and VS Yadav

       

      “Satellite Based Maritime Communication”

      Published in the Proceedings of National Conference on Applications of Microwaves held at University of Jodhpur, Jodhpur on 12-13 March 1981.

      Calla OPN Microwave Sensors

       

      “Microwave Sensors for the Indian Remote Sensing Programme”

      “Invited paper” published in the Proceedings of “US-India Symposium-cum-workshop on Remote Sensing Fundamentals and Applications” held at SAC, Ahmedabad during 11-15 March 1986.

      Kalla A R, Calla OPN, Vyas MCR, Bohra Dinesh, Joshi R

       

      “Effects of Radiation on Guinea Pig At X-band frequency - An Experimental Study” Proc. Annual Conference of Indian Association of Pathologies and Microbiologists, NOV. 97, Jodhpur PP 101.

      Calla OPN Bio

       

      “Biomedical Application of Microwaves” Proc XII Nat. Symp Radiation Phys. Jan 1998 PP 319-321.

      Calla OPN, Dr Vyas MCR, Dr Kalla A R and Bohra Dinesh

       

      “Effect of Radiation on guinea pigs at X-band frequencies”.

      Proc XII National Symp. Radiation Physics Jan 1998. Jodhpur PP 269-271.

      Dr A R Kalla, Dr Vyas MCR, Calla OPN and Bohra Dinesh

       

      “Patho physiological effects of Microwave radiation on guinea Pigs”

      An experimental study presented at Proc XII National Symp. Radiation Physics Jan 1998 Jodhpur PP 322-324.

      Calla OPN study

       

      “Study of Dry and Wet Soil Properties for Remote Sensing Using Microwave Techniques”. Proceedings of National Conference on Microwave, Antennas & Propagation, November 2-4, 2001 PP 198-203.

      Calla OPN Pro

       

      “Propagation Studies at 20/30 GHz for Satellite Communication” Proceedings of National Conference on Microwave, Antennas & Propagation, November 2-4, 2001 PP 259-263.

      Calla OPN, Rajesh Vyas, S P Purohit

       

      “Measurement of Dielectric Constant of Saline Water”, National Conference on

      Applications of Radio Techniques for Remote Sensing, November 23-24, 2001 

      PP 13-19.

      Calla OPN, Sumit Agarwal, Sumit Kumar Agarwal, Rajib Bhattacharya, Abhilekh Kalita

       

      “Measurement of permittivity of soil in x-band using resonant cavity method”, National Conference on Applications of Radio Techniques for Remote Sensing, November 23-24, 2001 PP20-23.

      Calla OPN, K C Harit

       

      “Measurement of Dielectric Constant of Natural Materials at Microwave Frequencies”, National Conference on Applications of Radio Techniques for Remote Sensing, November 23-24, 2001 PP 24-31.

      Calla OPN, Rajesh Kumar Singh

       

      “Estimation of Emissivity at Different Depths in Dry and Wet Soil Pack at Microwave Frequencies”, National Conference on Applications of Radio Techniques for Remote Sensing, November 23-24, 2001 PP 32-33.

      Calla OPN, R K Tiwari

       

      “Antenna Systems for Microwave Sensors”, National Conference on Applications of Radio Techniques for Remote Sensing, November 23-24, 2001 PP 42-53.

      Calla OPN satellite

       

      “Satellite Based Remote Sensing of Ocean”, National Conference on Applications of Radio Techniques for Remote Sensing, November 23-24, 2001 PP 2-2.

      Calla OPN , G R Panda, A K Das, Mainak Mukhopadhaya

       

      “Effect of Water body on Microwave Line of Sight Link”. Proceedings of

      National Conference on Microwave, Antenna, Propagation & Remote Sensing,

      December 19-21, 2002  PP VII 19- VII 20.

      Calla OPN, Himadri Sekhar Kalita

       

      “Measurement of Dielectric Constant of Dry, Wet and Saline Soil at X-band”, National Conference on Microwave, Antenna, Propagation & Remote Sensing, December 19-21, 2002 PP VIII 9-VIII 13

      Calla OPN, Bitupan Saikia

       

      “Study of Dielectric Constant of Saline Water and Saline Ice at different Physical Temperatures at X-band”. National Conference on Microwave, Antenna, Propagation & Remote Sensing, December 19-21, 2002 PP VIII 14- VIII 22

      Calla OPN, Shahin Pervez

       

      “Estimation of Brightness Temperature of Dry and Wet Soil at Microwave Frequency at Different Physical Temperature”, National Conference on Microwave, Antenna, Propagation & Remote Sensing, December 19-21, 2002 PP     IX 2- IX 20

      Calla OPN, Sanjib Kumar Agarwalla, Jyoti Baishya, Abhishek Agarwal

       

      “Estimation of Scattering Coefficient of Dry Soil for Two types of Surfaces at X-band”, National Conference on Microwave, Antenna, Propagation & Remote Sensing, December 19-21, 2002 PP X 2- X 8

      Sumit Agarwal, Tapan Borah, Calla OPN

       

      “Application of Matlab In Radar Signal Processing”, National Conference on Microwave, Antenna, Propagation & Remote Sensing, December 19-21, 2002 PP X 23- X 26

      S Agarwal, Calla OPN

       

      “Application of Wavelet Transform in Radar Signal Processing”, National Conference on Microwave, Antenna, Propagation & Remote Sensing, December 19-21, 2002 PP X 27 – X 30.

      Study of effect of rain on brightness temperature


      Calla O P N, Vikas Parihar, Naveen Dutt Joshi, Geetanjali Chakravorty and Usha Rathore

      Published in proceedings of National Conference on Recent Advancement in Microwave Tecnique and Applications (Microwave – 2006) held from Oct 6 –8, 2006 pp 275 – 279.

      Estimation of emsissivity and scattering coefficient s of rocks at microwave frequency


      Calla O PN , Dinesh Bohra, Sanjeev K Mishra, Arti Sharma, Giriraj Vyas, Hari Lohar and Ritika Somani

      Published in proceedings of National Conference on Recent Advancement in Microwave Tecnique and Applications (Microwave – 2006) held from Oct 6 –8, 2006 pp 280 – 283

      Effect of moisture content on the emissivity of soil at Microwave Frequency


      Calla O P N, Sanjeev K Mishra, Dinesh Bohra, Aditya Kumar and Pramod Kumar

      Published in proceedings of National Conference on Recent Advancement in Microwave Tecnique and Applications (Microwave – 2006) held from Oct 6 –8, 2006 pp 302 – 304

      Study of Dielectric Properties of Groundnut Oil at Ku Band Microwave Frequencies

      O P N Calla, Sanjeev K Mishra, Dinesh Bohra,Rajesh Vyas,Pranab

      Chatterjee, Jashmin Kumar Das & Israul Haque

      Published in proceedings of One Day Conference on Radio Science ( Radio Science – 2007)  held on  26 Aug. 2007.

      Measurement of Dielectric Constant of Dry Ice using Wave-Guide Cell Method at 33.08GHz

       

      O. P. N. Calla, Sanjeev Kumar Mishra, Dinesh Bohra and Rajesh Vyas, Chayan Bhawal, Hiranmoy Duwarah and Kuntal Deka

      Published in proceedings of One Day Conference on Radio Science ( Radio Science –  2007)  held on  26 Aug. 2007

      Study of Seasonal variability of Himalayan snow using IRSP4 MSMR data


         OPN Calla and Sugandha Lohar

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi.

      Designing of antenna system at microwave frequencies for study of solar emission


       OPN Calla, Anshuman Purohit, Jayant Purohit and Dinesh Kachhawaha

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi.

      Study of effect of microwave on the dielectric constant of vegetables


      OPN Calla, Dinesh Bohra, Sanjeev Kumar Mishra and Rajesh Vyas

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi.

      Measurement of scattering coefficient of soil at microwave frequency


      OPN Calla, KC Harit, Rajesh Vyas, Dinesh Bohra and Sanjeev Kumar Mishra

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi.

      IRSP4 MSMR data application in demarcation of vegetation covered areas in Rajasthan


      OPN Calla and Vikas Parihar

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi.

      Study of Dielectric Properties of Groundnut Oil at Ku Band Microwave Frequencies.


      OPN Calla, Sanjeev K Mishra, Dinesh Bohra, Rajesh Vyas, Pranab Chatterjee, Jashmin Kumar Das & Israul Haque

      Published in Proceedings of One Day Conference on Radio Science (Radio Science-2007) held on 26 August 2007.

      Measurement of Dielectric Constant of Dry Ice using Wave-Guide Cell Method at 33.08 Ghz


      OPN Calla, Sanjeev K Mishra, Dinesh Bohra and Rajesh Vyas, Chayan Bhawal, Hiranmoy Duwarah and Kuntal Deka

      Published in proceedings of One Day Conference on Radio Science (Radio Science-2007) held on 26 August 2007.

      Measurement of Dielectric Constant of Snow at 33 GHz using Free Space Method


      O P N Calla, Dinesh Bohra, Sanjeev K Mishra, V D Mishra and R K Garg

      International Centre for Radio Science (ICRS) Jodhpur-342001                   

      Presented at NSSW-08, SASE, Chandigarh

      INTERNATIONAL

      Calla OPN

      “Development of Microwave Sensors for Remote Sensing Applications – An Indian Experience”

      Published in the Proceedings of 24 Convegno Internazionale Sullo Spazio of Rassegna Internazionale Electronics Nucleare and Aerospaziale held in Rome, Italy during 22-23 March, 1984

      OP Kaushik, NS Pillai and Calla OPN

       

      “Swath Widening in Space Borne Synthetic Aperture Radar – A New Technique”

      Published in the Proceedings of 24 Convegno Internazionale Sullo Spazio of Rassegna Internazionale Electronics Nucleare and Aerospaziale held in Rome, Italy during 22-23 March, 1984.

      Raghubir Singh, Calla OPN, SS Rana, S Barathy, MK Radhakrishnan

       

      “11/14 GHz Propagation Study for India”

      Proceedings of the Asia Pacific Microwave Conference (APMC) held in Delhi  during 24-28 February, 1986, pp. 445-454.

      Kali Shanker, R Gopalakrishnan, Raghubirsingh, S Barathy, RB Nadagowdar, Calla OPN

       

      “Indian Propagation Experiment Project (PEP)”

      Proceedings of the Asia Pacific Microwave Conference held in Delhi during 24-28 February, 1986, pp. 455-465.

      VH Bora, Ravi Kumar, NS Pillai, Calla OPN

       

      “Ground Based 8-18 GHz Scatterometer for Microwave Signature Studies for Remote Sensing Applications”

      Proceedings of the APMC, held on Delhi during 24-28 Feb. 86, pp. 468-480.

       

      OPN Calla, NS Pillai, SS Rana, VH Bora

       

      “Microwave Sensors for Remote Sensing Applications Review of the Indian Efforts”

      Proceedings of the APMC held in Delhi during 24-28 Feb. 86, pp. 481-486.

      OPN Calla, SB Sharma, P kandaSamy, Ramesh Garg

       

      “Effect of Skinlayer on the Design of Conformal Ring Antenna for Thermographic Applications”

      Proceedings of the APMC, held in Delhi during 24-28 Feb. 86, pp. 503-506.

      OPN Calla, SB Sharma, P kanda Swamy, Ramesh Garg

       

      “Wave Impedance of Antenna for Biomedical Applications” Proceedings of the APMC, held in Delhi during 24-28 Feb. 86, pp. 507-510.

      NS Pillai, DB Dave, AM Jha, OPN Calla

       

      “Design & Development of a Side Looking Airborne Radar for Resources Survey Applications”

      Proceedings of the APMC, held in Delhi during 24028 Feb. 86, 581-588.

      SS Rana, OPN Calla, Raghubir Singh, MB Dave, RK Kewalia

       

      “Zenith Looking Microwave Radiometer for Propagation Studies in the 13 GHz Frequency Band”

      Proceedings of the APMC held in Delhi during 24-28 Feb. 86, pp. 642.

      SB Sharma, RK Malaviya, OPN Calla

       

      “Ku Band Orthmode Transducer Offers Precise Measurement of Cross Polarisation”

      Proceedings of the APMC held in Delhi during 24-28 Feb. 86, pp. 685-689.

      OPN Calla, SS Rana, SK Nigam, AR Kulkarni

       

      “Study of Cancerous Tumours in Swiss Bred Mice using Microwave Thermography”

      Proceedings of the APMC held in Delhi during 24-28 Feb. 86, pp. 708-709.

      AK Sen, A Mitra, PK Karmakar, A Moistra, MK Das Gupta, SS Rana and OPN Calla

       

      “Rain Attenuation of Millimeter Waves Observed Simultaneously by Radiometer and Bistatic Radar”

      Presented at the 6th International Conference on Antennas and Propagation held at University of Warwick, UK, during 4-7 April 1989 and published by UK publication No. P: 234, 1989

      Calla OPN Microwave

       

      “Microwave Research Activities at Space Applications Centre”

      Published in the Conference Proceedings of 3rd Asia Pacific Microwave Conference (APMC-90) held in Tokyo, Japan during September 18-21, 1990 pp. 201-205.

      Calla OPN, S Barathy and MK Radhakrishnan

       

      “Rain Height Over India From Ground Based Experimental Data”

      Published in the Proceedings of URSI Commission F Symposium on “Regional Factors in Predicting Radiowave Attenuation Due to Rain” held in Rio de Janeiro, Brazil during December 3-7, 1990 pp. 151-154.

      AK Sen, AK Devgupta, PK Karmakar, R Bera, MK Dasgupta, Calla OPN and SS Rana

       

      “Radiometric Signature of Layer Clouds Observed at 22.235 GHz”

      Published in the Proceedings of the International Conference on Millimeter Wave and Microwave (ICOMM-90) held at DEAL, Dehra Dun during December 19-21, 1990 pp. 2-21 (S-2.1).

      AK Sen, PK Karmakar, R Bera, MK Dasgupta, Calla OPN and SS Rana

       

      “Dual Frequency Radiometric Measurement of Millimeter Wave Attenuation in Clear Air and Rain”

      Published in the Proceedings of the International Conference on Millimeter Wave and Microwave (ICOMM-90) held at DEAL, Dehra Dun during December 19-21, 1990 pp. 29-30 (S-2.3).

      AK Sen, PK Karamakar, R Bera, MK Sengupta, A Mitra, MK Dasgupta, Calla OPN and SS Rana

       

      “Scanning Radiometry at 22.235 GHz for Measurements of Water Vapour Content and Cloud Cover”

      Published in the Proceedings of the International Conference on Millimeter

      Wave and Microwave (ICOMM-90) held at DEAL, Dehra Dun during

      December 19-21, 1990 pp. 709-710 (S-23.6).

      Susanta Kundu and Calla OPN

       

      “Coded Orthogonal Frequency Division Multiplexing in Communications System using Digital Signal Processing” Published in the Proceedings of 1st International Broadcasting Cable and Satellite Indian 1993 Conference held at New Delhi during 25-28 October, 1993 pp. 288-298.

      Calla OPN Preciptation

       

      “Precipitation effect in India on Propagation above 10 GHz” Proc. URSI commission F open symposium on climate parameters in Radio wave Propagation. CLIMPARA, Canada, April 1998. PP 205-207.

      Calla OPN Application

       

      “Application of Microwave Remote Sensing In Ocean Studies”.

      Proceedings of ICONS 2002. International Conference on Sonar-Sensors and Systems.

      Sensing Electrical Parameters of Water through Microwave Frequencies


      O.P.N.Calla & R.Mishra

      Proceedings of 1st International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2003) 17 – 19 December 2003 pp 2-2 –2-5

      Model Generation for Prediction of Fades in Microwave Link over Water Body


      O.P.N. Calla, Tapan Borah, Praveen Chaudhary, Anahita Vyas, Dinesh Bohra, Gokul  Panda, A.K.Das and Mainak Mukhopadhayaya

      Proceedings of 1st International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2003) 17 – 19 December 2003 pp 7-34 – 7-42

      Image Generation for Microwave Remote Sensing using Java Language


      O.P.N. Calla, Meenakshi Mathur, Monika Upadhayay, Ramesh Punia and Praveen Chaudhary

      Proceedings of 1st International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2003) 17 – 19 December 2003 pp 9-3 – 9-8

      Microwave Remote Sensing of Soils


      O. P N Calla, KC Harit  

      Proceedings of 1st International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2003) 17 – 19 December 2003 pp 9-12 – 9-14

      Microwave Remote Sensing of Vegetation Canopy

       

      O. P N Calla, Sanjib Kumar Agarwalla, Dinesh Bohra, Sandip Ghosh and Rajesh Vyas

      Proceedings of 1st International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2003) 17 – 19 December 2003 pp 10-26 10-35

      Study of Emission Behaviour and Scattering Behaviour of two samples of Aravali Rocks at Microwave

       

      O P N Calla, Dinesh Bohra, Sanjib Kumar Agarwalla, Chetan Bohra, Sandip Ghosh, Rajesh Vyas

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 47-55

      Measurements of Complex Permittivity of Dry Soils using Wave-Guide Cell method


       

      O P N Calla, Sanjeev Kumar Mishra, Omprakash Acharaya

      Proceedings of 2nd International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 56-59

      Study of RCS of Different Shapes at X-band Frequencies and Methods of External Calibration of Active


      O P N Calla, Amitesh Ranjan and Jitendra Singh Jaitawat

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 88-96

      A Corrugated Feed Design for Microwave Antenna


      O P N Calla, Chetan Bohra

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 123-126

      Study of Propagation of Radio Waves at 26 – 40 GHz and 45 – 50 GHz


      O P N Calla

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 263-267

      Factors Affecting the Microwave Communication Link failure Over Water Body and Model Generation


      O P N Calla, Dinesh Bohra, Sanjib Kumar Agarwalla, Sandip Ghosh

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 280-284

      Retrieving of Data from Images (Both Java and C++) using Java Language


      O P N Calla, Nidhi Yadav, Amit Sharma, Monika Upadhyaya, Seema Jain, Sweta  Vyas

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 330-333

      Study of Scattering Properties and Emission Properties of Vegetation Canopy at X-Band


      O P N Calla, Dinesh Bohra, Sanjib Kumar Agarwalla, Sandip Ghosh, Rajesh Vyas, Chetan Bohra

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 338-347

      Study of Emission Properties of Dry Soil with respect to their Physical Constituents


      O P N Calla, S K Mishra, K C Harit

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 348-353

      Calla OPN Preciptation and Monitoring

       

      “Prediction and Monitoring of oceanic disasters using microwave remote sensing techniques”. Proceedings of the Second International Conference Coventry University, U K, April 2004, PP 21-28.

      Study of Effect of Rain and Dust on Propagation of Radio Waves At Millimeter Wavelength


      O.P.N. Calla and J S Purohit

      Proceedings of the URSI General Assembly 2005, New Delhi

      Fusion of Passive and Active Microwave Sensors Data For enhancement Of Geophysical Feature (INVITED)


      O.P.N. Calla, S K Mishra and O P Acharya

      Proceedings of the URSI General Assembly 2005, New Delhi

      Low Cost Design and Development Method of MM-Wave Antenna Using Corrugated Feed.


      O P N Calla and Chetan Bohra

      Proceedings of International Conference on Antenna Technology, Space Application Centre ISRO Ahmedabad   23-24 February 2005.

      Study of Emission and Scattering Behaviour of Ice at Frequency 35.6 GHz.


      O P N Calla, Dinesh Bohra, Sanjeev K Mishra & Rajesh Vyas

      Proceedings of International Workshop on Snow, Ice, Glacier & Avalanches, January 7-9 2008, Mumbai, pp.77-84.

      Study of Effects of Rocky Terrain of Microwave Line of Sight Link at CJ, X and Ku bands.


      O P N Calla, Dinesh Bohra, Subhankar Pandit and Washim Reza Ali

      Proceedings of International Conference on Recent Advances Microwave Theory and Application, MICROWAVE-2008, November 21st -24th 2008, Jaipur, pp.342-345.

      Measurement of Soil Moisture using microwave radiometer.


      O P N Calla, Dinesh Bohra, Rajesh Vyas, Bhawani Shankar Purohit, Rakesh Prasher, Abhishek Loomba and Naveen Kumar.

      Proceedings of International Conference on Recent Advances Microwave Theory and Application, MICROWAVE-2008, November 21st -24th 2008, Jaipur, pp.621-624.

      Demarcation of Land Water Boundary of Indian Coast using MSMR Data of IRSP4 Satellite at 10.65 GHz.


      O P N Calla, Uttra Purohit, Madhuri Khakholia

      Proceedings of International Conference on Recent Advances Microwave Theory and Application, MICROWAVE-2008, November 21st -24th 2008, Jaipur, pp.632-634.

      Empirical Relation for Designing the meander line antenna.


      O P N Calla, Amit Kumar Singh, Sandeep Kumar, Triloki Kumar

      Proceedings of International Conference on Recent Advances Microwave Theory and Application, MICROWAVE-2008, November 21st -24th 2008, Jaipur, pp.695-697.

      Microwave Applications in Remote Sensing


      O P N Calla

      Proceedings of International Conference on Electronics, Computer and Communication on June 27-29 2008 at University of Rajsahi, Rajsahi, Bangladesh.

      Study of Different Configurations of Microstrip Antenna at Microwave Frequencies


      O P N Calla, Anil Kumar

      Proceedings of International Conference on Electronics, Computer and Communication on June 27-29 2008 at University of Rajsahi, Rajsahi, Bangladesh.

      Study of Scattering Behaviour of Dry and Wet Soil at Microwave Frequencies.


      O P N Calla, K C Harit, Rajesh Vyas, Dinesh Bohra

      Proceedings of International Conference on Electronics, Computer and Communication on June 27-29 2008 at University of Rajsahi, Rajsahi, Bangladesh.

      Study of Emission Behaviour of Dry and Wet soil at Microwave Frequencies


      O P N Calla, Rajesh Vyas, Dinesh Bohra & Amit Arora

      Proceedings of International Conference on Electronics, Computer and Communication on June 27-29 2008 at University of Rajsahi, Rajsahi, Bangladesh.

       
  • LIST OF PAPERS PUBLISHED IN INDIAN JOURNALS  
       
      Calla OPN, Sunderarajan Y, Louis CJ and Rao KS

      “ A S-band Pulsed Radar Transponder”

      Presented in the Symposium on Electronics (Microwave Technology) at Tata Institute of Fundamental Research 25-27 Feb. 1970.

      Chaudhary M and Calla OPN

      "Design and Fabrication of a Cavity to Measure Complex permittivity at X-band". Published in the Journal of Institution of Engineers (India),

      Vol. XLIII, No.5, Part ET.2, January 1963.

      Chatterjeee AK, Advani JG, Calla OPN and Chatterjee PK

       

      “A Novel Type of Compensation for Transistor Video  Amplifier” The Journal of Institution of Engineers (India) Vol. 43, No. 9, Part 3, May 1963.

      Calla OPN

       

      "Dielectric Loaded Conical Helix Antenna"

      Journal of Institution of Telecommunication Engineers Vol. 13, No.7 (1967), pp. 285-290.

      Calla OPN.

       

      "L-band CW Oscillator Using Pencil Tube" J.I.T.E. Vol. 13, No. l2, pp. 478-484 (1967).

      Calla OPN..

       

      "S-band Plate Pulsed Oscillator"

      J.I.T.E. Vol.14, No.6, pp. 233-235 (1968).

      Calla OPN-

       

      "Designing Grided Tube Oscillators"

      J.I.T.E. Vol. 14, No.8, pp. 365-369 (1968).

      Calla OPN-1

       

      “S-band Transponder Antenna for Centaure Rocket" J.I.T.E. Vol. 14, No.2, pp. 79-84 (1968).

      Calla OPN and Gandhi KV

       

      "Constant Speed Servo System for Surveillance Radar" J.I.T.E. Vol. 14, No. 10, pp. 421-429 (1968).

      Calla OPN--

       

      “L-band CW Oscillator Using Transistor Type 2N3866" J.I.T.E. Vol. 14, No. 11, pp. 496-497 (1968).

      Calla OPN and Shakil SM

       

      "A Study of Cylindrical Heliax Antenna at VHF Range" J.I.T.E. Vol.15, No.          3, pp. 209-215 (1969).

      Shakil SM and Calla OPN

       

      "A Study of Beam Mode Helix"

      J.I.T.E. Vol. 16, No.1, pp. 35-38 (1970).

      Calla OPN and Shakil SM.

       

      “Satellite Power Determination for Given Ground Station"

      J.I.T.E. Vol. 16, No.4, pp. 250-256 (1970).

      Calla OPN

       

      "A Study of Single Coaxial Resonant Cavity"

      J.I.T.E. Vol. 16, No.5, pp. 369-377 (1970).

      Calla OPN and Shakil SM

       

      "A Study of Variation of Terminal Impedance for Normal Mode Helix Antenna at VHF Range"

      J.I.T.E. Vol. 16, No.7, pp. 530-538 (1970).

      Calla OPN

               Calla OPN

      "Analysis of Nonlinear Variable Capacitance Parametric Amplifier"

      J.I.T.E. Vol. 16, No.8, pp. 587-700 (1970).

       

      Calla OPN, Sundarajan Y, Louis CJ and Rao KS

       

      “Radar Transponder for Tracking Centaure Rocket”

      J.I.T.E. Vol. 16, No. 10, pp. 587-700 (1970).

      Calla OPN1

       

      “Ionospheric Phase Distortion at UHF Band”

      I.T.E. Vol. 17, No.5, pp. 160-162 (1971

      Calla OPN

       

      “Effect of Trees on Direct Broadcast Television Service by Satellites”

      J.I.T.E. Vol. 17, No.1, pp. 9-13 (1971).

       

      Miss Rajeswari BV and Calla OPN

       

      “A Brief Survey of Monopulse Technique”

      J.I.T.E. Vol. 18, No.12, pp. 576-581 (1972).

      Calla OPN...

       

      “Study of Ionospheric Phase Distortion at Ahmedabad”

      J.I.T.E. Vol.18, No.11, pp. 532-535 (1972).

      Calla OPN and Koshy VK

       

      “Broadband Impedance Matching of Horn Antenna by Ridge Techniques”

      I.T.E. Vol.19, No.9, pp. 502-504(1973).

      Raghubir Singh and Calla OPN

       

      “Monopulse Feed System”

      J.I.E.T.E. Vol.19, No.7, pp. 366-371 (1973).

      KG Yadav, Calla OPN and Miss BV Rajeshwari

       

      “Determination of Primary Pattern to Achieve Required Secondary Pattern for Given Paraboloidal Reflectors”

      J.I.E.T.E. Vol.19, No.8, pp. 449-452 (1973).

      Calla OPN, VK Koshy, VH Bora and KK Bandhopadhyay

       

      “Dual Polarised Feed Systems for Communication Antennas”

      J.I.E.T.E. Vol.19, No.8, pp. 459-463 (1973).

      Calla OPN, RK Khola and SR Sivaraman

       

      “Using Mesh as the Reflector Surface for Microwave Antenna”

      J.I.E.T.E. Vol.19, No.8, pp. 425-427 (1973).

      DK De, Calla OPN, VH Bora and HG Panchal

       

      “Fabrication of Goose Neck for LOS Microwave Communication Antenna Systems”

      J.I.E.T.E. Vol.19, No.8, pp. 464-466 (1973).

      NS Pillai and Calla OPN

       

      “On the Development of the Antenna/Feed System for a Long Range Tracking Radar”

      Published in Microwave Division Technical Journal in July 1973.

      RK Khola and Calla OPN

       

      “Designing the Truncated Paraboloidal Reflector Surface”

      Published in Microwave Division Technical Journal in July 1973.

      Calla OPN and Shankara KN

       

      “Development of Shrouded High Performance Antennas”

      Published in Microwave Division Technical Journal in July 1973.

      DK De, Calla OPN, VH Bora and HG Panchal.

       

      “Fabrication of Goose Neck for LOS Antenna System”

      Published in Microwave Division Technical Journal in July 1973.

      HO Gautam and Calla OPN

       

      “Millimeter Wave Activities in Microwave Division (ISRO)”

      Published in Microwave Division Technical Journal in July 1973.

      Calla OPN, RK Khola and SR Sivaraman..

       

      “Using Mesh as the Reflector Surface for Microwave Antenna”

      Published in Microwave Division Technical Journal in July 1973.

      KG Yadav, Calla OPN and Miss BV Rajeshwari.

       

      “Determination of Primary Pattern to Achieve Required Secondary Pattern for Given Paraboloidal Reflectors”

      Published in Microwave Division Technical Journal in July 1973.

      AK Bandhopadhyay and Calla OPN

       

      “Effects of Feed Line Radiation on the Radiation Pattern of the Centre-fed Dipole Antenna with Feed Point Displaced Arbitrarily”

      Published in Microwave Division Technical Journal in July 1973.

      G Raju and Calla OPN

       

      “Gunn Sources for Police Applications”

      J.T.E.T.E. Vol. 20, No.11, Nov. 1974, pp. 555-557.

      Calla OPN and Kaushik OP

       

      “Radar System for Traffic Control”

      J.T.E.T.E. Vol. 20, No.10, Oct. 1974, pp. 515-517.

      AK Bandhopadhyay and Calla OPN.

       

      “Integral Equation of Arbitrary Shape Symmetrical Travelling Wave Linear Antenna”

      Published in Microwave Division Technical Journal in 1974.

      Calla OPN-2

       

      “Propagation Studies at Millimeter Wave Frequencies”

      Published in Microwave Division Technical Journal in 1974.

      RK Khola and Calla OPN

       

      “A Conceptional Study of a Multiple Beam Antenna for Satellite”

      Published in Microwave Division Technical Journal in 1974.

      Calla OPN

       

      “An Overview of Millimeter Waves Status”

      Published in Microwave Division Technical Journal in 1974.

      N Narasimhan, S Balasubramanian and Calla OPN

       

      “MIC Fabrication : Performance Vs Tolerance”

      Published in Microwave Division Technical Journal in 1974.

      Calla OPN, S Balasubramanian and SS Rana

       

      “Satellite Microwave Radiometer (SAMIR)”

      Published in Microwave Division Technical Journal in 1975.

      Calla OPN

       

      “Passive Microwave Remote Sensing”

      Published in Microwave Division Technical Journal in 1975.

      VK Koshy and Calla OPN

       

      “Development of a High Efficiency Scalar Feed for Communication Antenna”

      J.I.E.T.E. Vol. 22, No.1, pp. 28-31 (1976).

      G Raju and Calla OPN

       

      “K-band Transferred Electron Oscillators”

      J.I.E.T.E. No.2, Vol. 22, pp. 94 (1976).

       

      Calla OPN, G Raju, SS Rana and S Balasubramanian

       

      “India’s First Remotely Sensed Satellite Data from BHASKARA Using ‘SAMIR’”

      J.I.E.T.E. Vol. 25, No.8, August 1979

      Calla OPN, G Raju, SS Rana and S Balasubramanian.

       

      “Microwave Brightness Temperature Distribution over the Bay of Bengal using the Satellite Microwave Radiometer (SAMIR) Data”

      J.I.E.T.E. Vol. 26, No.5, 1980, pp. 243-247.

      RV Bhonsale, SK Alurkar, SS Degaonkar, Calla OPN, G Raju, SS Rana, B Lokanadham and B Vijay Gopal

       

      “Multi-frequency Observations of Radio Sun During Total Solar Eclipse of 6 February 1980”

      Published in the Bulletin of Astronomical Society of India.

      Calla OPN, G Raju, SS Rana and S Balasubramanian

       

      “The ‘Alternate Mode’ Operation of “SAMIR” On-board ‘Bhaskara’ ”

      J.I.E.T.E. Vol. 26, No.7, 1980, pp. 332-334.

      SS Degaonkar, SK Alurkar, RV Bhonsle, Calla OPN and B Lokandham

       

      “Magneto-ionic conditions and energetics of simultaneous solar microwave bursts at 2.8, 10 and 19.3 GHz on 1980 June 4.”

      Bull. Astr. Soc. India (1981) 9, pp. 291-296.

      Calla OPN, NS Pillai, OP Kaushik, VH Bora, S Deivendran, MN Vyas and KN Shankara

       

      “Side Looking Airborne Radar for Remote Sensing Applications : Results of the First Campaign”

      J.I.E.T.E. Vol. 26, No.12, December 1980, pp. 591-594.

      Calla OPN, ML Hasija, Gurmit Singh and S Barathy

       

      “Role of Earth Stations in Clock Synchronisation via Satellite”

      J.I.E.T.E. Vol. 27, No.11, 1981, pp. 541-545.

      PNR Setty, Calla OPN, HO Gautam and VK Jain

       

      “Study of Attenuation due to Rainfall at 13 GHz LOS Link”

      J.I.E.T.E. Vol. 27, No.12, 1981, pp. 633-635.

      Calla OPN, G Raju, SS Rana and S Balasubramanian

       

      “Multispectral Microwave Observation of Earth by SAMIR onboard Bhaskara-II”

      J.I.E.T.E. Vol. 25, No.5, May 1982.

      SK Alurkar, RV Bhonsle, SS Degaonkar, Calla OPN and G Raju

       

      “Multifrequency Spectra of Solar Brightness Temperature derived from Eclipse Observations”

      J. Astrophys. Astr. (1983) 4, pp. 289-293

      Calla OPN and Kalishankar

       

      “Antarix Ke Urza Shrot”

      Article in Hindi published in Special Issue on Urza and Vikas Visheshak, The Institution of Engineers (India), Vol. 65, Part 2, December 1984, pp. 143-145.

      Calla OPN and Kalishankar

       

      “Space Energy Sources”

      Hindi Paper sent to Institution of Engineers, Calcutta for inclusion in the special issue on Energy published in December 1984.

      SK Alurkar, RV Bhonsle, SS Degaonkar, Calla OPN and G Raju

       

      “Possible Evidence of Solar Oscillations in the Multifrequency Spectra of Solar Radio Brightness Fluctuations”

      Mem. S.A.Lt. 1984, pp. 251-261.

      Calla OPN and Kalishankar.

       

      “Samudri Upagrah Sanchar Ka Adhunik Sansthan – INMARSAT”

      Article in Hindi published in the Institution of Engineers (India), Vol. 65, Part Hindi 3, April 1985, pp. 180-184.

      Calla OPN and Kalishankar

       

      “Samudri Upagrah Sanchar Ka Adhunik Sansthan – INMARSAT”

      Article in Hindi published in the Institution of Engineers (India), Vol. 65, Part Hindi 3, April 1985, pp. 180-184.

      Calla OPN, Singh R, Setty PNR, Rana SS, Barathy Sand Radhakrishnan MK

       

      “Rain Drop Size Measurements at Ahmedabad”

      Published in “Vayu Mandal” of India Meteorological Society, New Delhi.

      Vol. 16, Nos. 1 & 2 January-June 1986, pp. 6-9.

      OPN Calla & Kali Shanker

       

      “International Telecommunications Satellite Organisation–INTELSAT

      Article in Hindi published in Institution of Engineers (India) Journal, Volume 66, part 3, April, 1986.

       

      AD Vyas, AJ Trivedi, OPN Calla and SS Rana

       

      “Microwave Radiometer Measurements of Soil Moisture Content”

      Indian Journal of Radio & Physics, Vol. 15, June 1986, pp. 110-113.

      AD Vyas, AJ Trivedi, OPN Calla, SS Rana and SB Sharma

       

      “Microwave Radiometric Measurements of Soil Moisture Content Over Bare Soil at 1.55 GHz”

      Indian Journal for Radio and Space Physics, Vol. 17, Feb. 1988,  pp.35-36.

      SB Sharma and Calla OPN

       

      “Gain Optimisation With Suppressed Side Lobes and Grating Lobes in SBF Antenna”

      JIETE, Vol. 34, No.6, 1988. pp. 463-465.

      SB Sharma and Calla OPN.

       

      “Occurrence of Grating Lobes and Their Suppression in Broadwall Slotted Array of Shunt Slots”

      JIETE, Vol.35, No.4, May-June 1989, pp. 153-159.

      SB Sharma and Calla OPN....

       

      “Design of Small Linear Resonant Array of Broadwall Shunt Slots”

      JIETE, Vol.35, No.5, Sept-Oct. 1989, pp. 290-298. 109.

      Calla OPN, Singh R, Barathy S and Rashakrishnan MK

       

      “Classification of Rain Rate Regions for Propagation Applications”

      Indian Journal of Radio & Space Physics Vol. 18, June 1989, pp. 108-112.

      AK Sen, PK Karmakar, AK Dev Gupta, S Devbarman,

       

      MK Das Gupta, SS Rana and OPN Calla

      “Radiometric Studies of Emission Noise Pattern Over a Tropical Station”

      Indian J. Radio & Space Physics, Vol. 18, Oct & Dec. 1989, pp. 165-170.

      Calla OPN,

       

      “Applications of Microwave in Remote Sensing”

      Invited paper published in Special Issue of Indian Journal of Radio & Space Physics (IJRSP) in October 1990 Vol. 19, October & December 1990, pp. 343-358.

      Calla OPN.,

       

      “Microwave Antennas”

      Students Journal of IETE, Vol. 34, No.2, April-June 1993, pp. 107-112.

      Calla OPN,.

       

      “Magnetron and Travelling Wave Tubes”

      Students Journal of IETE, Vol. 34, No.2, April-June 1993, pp. 113-123.

      Calla OPN..

       

      “Klystron”

      Students Journal of IETE, Vol. 34, No. 2, April-June 1993, pp. 125-133.

      O.P.N.Calla, M. C. Borah, R.Mishra, A.Bhattacharya & S.P Purohit

       

      Study of properties of dry and wet loamy sand soil at microwave frequencies.

      Indian J Radio & Space Phys, 28 (1999) 109

      O.P.N. Calla, B.Deka

       

      Study of emissivity of dry and wet loamy sand soil at microwave frequencies.

      Indian J Radio & Space Phys, 29 (2000) 140

      O.P.N Calla, I Hannan

       

      Estimation of Scattering coefficient of dry and wet soil  with different moisture content at microwave frequencies

      Indian J Radio & Space Phys, 30 (2001) 106

      O.P.N. Calla, Santanu Sharma

       

      Study of Scattering behaviour of dry and wet soil with undulating surface at microwave frequencies

      Indian J Radio & Space Phys, 30 (2001) 332

      O P N Calla, Ishwar Rajesh

       

      Emission Behaviour of foam covered water surface at microwave frequencies.

      Indian J Radio & Space Phys, 31 (2002) 98

      O P N Calla, R K Singh

       

      Emission Character of dry and wet loamy sand soil layered pack at microwave frequencies

      Indian J Radio & Space Phys, 31 (2002) 285

      O P N Calla, S. Agarwal, S K Agarwalla, R Bhattacharya and A Kalita

       

      Comparative study of the methods of measurements of dielectric constant at microwave frequencies for dry and wet soil.

      Indian J Radio & Space Phys, 32 (2003) 108

      O P N Calla, A Baruah, B Das, K P Mishra, M Kalita, S S Haque

       

      Variability of dielectric constant of dry soil with its physical constituents at microwave frequencies and validation of the CVCG model.

      Indian J Radio & Space Phys, 33, (2004) 125

      O P N Calla, Vivek Ranjan, Chetan Bohra, Gangadhar L Naik, Waseem Hasan & Harmeet Singh Bali

       

      Estimation of dielectric constant of soil from the given texture at microwave frequency

      Indian J Radio & Space Phys, 33 ( June 2004) 196

      O P N Calla, A. Baruah, B. Das, K P Misha, M Kalita & S S Haque

       

      Emission and scattering behavior of dry soils from northest India

      Indian J. Radio & Space Phys, 33 October 2004 pp 321-328

      Calla OPN and Lal PMC

       

      “Satellite Based Mobile Communications & Position Determination”

      Published in the Special Issue of IETE Journal on Digital Communications.

      Estimation of Emissivity and Scattering Coefficient

       Estimation of Emissivity and Scattering Coefficient of the constituents of vegetation at Microwave Frequencies

      O P N Calla, Avdhesh Roop Rai, Pronnoy Mathur, Deepak Mathur and Dinesh    

      Bohra,  Indian J. Radio & Space Phys, Vol. 34 February 2005 pp 67-70

      Comparison of emissivity and scattering coefficient

      Comparison of emissivity and scattering coefficient of two samples of Aravali rocks and dry soils of Rajasthan at frequencies of X-band.

      O P N Calla, Dinesh Bohra, Sanjib Kumar Agarwalla, Sandip Ghosh, Chetan Bohra and Rajesh Vyas,  Indian J. Radio & Space Phys, Vol. 36 February 2007 pp 65-71

      Effect of Microwave radiation on the electrical parameters of soil

       

      O P N Calla, Dinesh Bohra, Sanjeev Kumar Mishra,  M ALam, D Hazarika & L Ramawat, Indian J. Radio & Space Phys, Vol. 36 June 2007 pp 229-233.

      AK Sen, R Bera, MK Sengupta, Ajoy K Datta, G Tarafder, S Chattopadhyay, MK Dasgupta, Calla OPN and SS Rana

       

      “Integrated Water Vapour Content by Scanning Radiometry” Int. J. Remote Sensing, 1993, pp. 1-10.

      Measurement of Dielectric Constant of Dry Soil using Wave Guide Cell Method with two different approaches at X-Band

       

      O P N Calla, Sanjeev K Mishra, Dinesh Bohra, Rajesh Vyas, Kapil Saraswat, Sumeet Ranga, Sunil Singh Chaudhary

      Published in proceedings of One Day Conference on Radio Science ( Radio Science –  2007)  held on  26 Aug. 2007

      Measurement of Scattering Coefficient of Soil Surface Covered with Grass at different Frequencies in L band

             O P N Calla, Sanjeev K Mishra, Dinesh Bohra, Rajesh Vyas, K C Harit, B.Bora, D.

              Mushahary, N.Paul, V. Gupta, A.Sadh

              Published in proceedings of One Day Conference on Radio Science (Radio Science –   

              2007)  held on 26 Aug. 2007.

      Measurement of Dielectric Constant of Dry Soil using Wave Guide Cell Method with two different approaches at X-Band


       

      OPN Calla, Sanjeev K Mishra, Dinesh Bohra, Rajesh Vyas, Kapil Saraswat, Sumeet Ranga, Sunil Singh Chaudhary

      Published in proceedings of One Day Conference on Radio Science (Radio Science-2007) held on 26 August 2007.

      Measurement of Scattering Cofficient of Soil Surface Covered with Grass at different Frequencies in L band


       

      OPN Calla, Sanjeev K Mishra, Dinesh Bohra, Rajesh Vyas, K C Harit, B.Bora,   D Mushahary, N Paul, V Gupta, A Sadh.

      Published in proceedings of One Day Conference on Radio Science (Radio Science-2007) held on 26 August 2007.

      Measurement of Complex Permittivity of ICE at R band Microwave Frequencies using Wave-guide Cell Method

       

      O P N Calla, Dinesh Bohra, Sanjeev K Mishra and Rajesh Vyas

      International Centre for Radio Science (ICRS) Jodhpur-342001

      Presented at NSSW-08, SASE, Chandigarh

      Measurement of Dielectric Constant at Dry Soils of Assam and Meghalaya and Comparison with the Dry Soil of Kashmir

       

      O.P.N. Calla, A.Baruah, B.Das, K.P.Mishra, M.Kalita and S.S.Haque

      Proceedings of 1st International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2003) 17 – 19 December 2003 pp 2-6 – 2-10

      Estimation of emissivity and scattering coefficient of the constituents of the vegetation at microwave frequencies

       

      O.P.N. Calla, Avdhesh Roop Rai, Deepak Mathur, Prannoy Mathur Dinesh Bohra  and Rahul Calla.

      Proceedings of 1st International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2003) 17 – 19 December 2003 pp 2-15 – 2-19

      Estimation of Composite Emissivity & Scattering Coefficient of Vegetation Canopy of Neem Tree at Microwave Frequencies


       

      O. P N Calla, Dinesh Bohra, Sanjib Kumar Agarwalla, Sandip Ghosh and Rajesh Vyas

      Proceedings of 1st International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2003) 17 – 19 December 2003 pp 2-20 – 2-34

      A Study on Variation of the Dielectric Constant of Dry Soil Samples of Assam, Himachal Pradesh and Orissa With their Physical Constituents at Microwave Frequencies and Validation of the CVCG Model

      O P N Calla, A Das, B K Kataky, C Baruah, P Dutta, P P Konwar, Omprakash Acharya, Sanjeev Kumar Mishra, Chetan Bohra

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 42 -46

      Study of RCS of Different Shapes at X-band Frequencies and Methods of External Calibration of Active Microwave Remote Sensors


       

      O P N Calla, Amitesh Ranjan and Jitendra Singh Jaitawat

      Proceedings of 2nd  International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004)  23rd – 25th Nov. 2004 pp 88-96

      Study of Variation of Emission and Scattering behavior of Dry Soils of Orissa and Himachal Pradesh with their Physical Constituents


       

      O P N Calla, Sanjeev K Mishra, Omprakash Acharaya

      Proceedings of 2nd International Conference on “Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2004) 23rd – 25th Nov. 2004 pp 392-402.

      Estimation of Emissivity And Scattering Coefficient Of Vegetation From Measured Dielectric Constant At Microwave Frequencies


       

      O.P.N. Calla and Dinesh Bohra

      Proceedings of the URSI General Assembly 2005, New Delhi

      Estimation of the Scattering Coefficient at Microwave Frequencies of Dry and Wet Soils of India Using Measured Values of Dielectric Constant and Relating the Same with the Constituents of the Soil

      O.P.N. Calla, O P Acharya, S K Mishra and K C Harit

      Proceedings of the URSI General Assembly 2005, New Delhi

      Comparison of the Soil Moisture Obtained Directly From Radiometer and the Estimated Soil Moisture from Measured Dielectric Constant

       

      O.P.N. Calla, S K Mishra, O P Acharya and K C Harit

      Proceedings of the URSI General Assembly 2005, New Delhi

      Study of the Electrical Parameters like Dielectric Constant, Emissivity and Scattering Coefficient of Ice at Different Physical Temperatures at Microwave Frequencies

      O.P.N. Calla, Dinesh Bohra and Rajesh Vyas

      Proceedings of the URSI General Assembly 2005, New Delhi

      Measurement of Dielectric Constant of Saline Water and Estimation of emissivity And Scattering Coefficient at Different Physical Temperatures at Microwave Frequencies

      O.P.N. Calla, Dinesh Bohra and Rajesh Vyas

      Proceedings of the URSI General Assembly 2005, New Delhi

      Study of scattering coefficient of flooded soil, semi dry soil, and natural dry soil at CJ, X and Ku band of microwave frequencies


       

      O P N Calla, Rajesh Vyas, Dinesh Bohra, Ashok Ranjan, Ranjeet Kumar, Sourabh Kumar Mittal.

      Proceedings of International Conference on Recent Advances Microwave Theory and Application, MICROWAVE-2008, November 21st -24th 2008, Jaipur, pp.692-694.

      Validation of the method for Calibration of Space Borne Passive Microwave Sensors using a desert area.

       

      O P N Calla, Vikas

      Proceedings of International Conference on Electronics, Computer and Communication on June 27-29 2008 at University of Rajsahi, Rajsahi, Bangladesh.

      Calla OPN Satellite Based

      “Satellite Based Disaster Warning System”

      Invited paper presented in the National Seminar on Remote Sensing of Water Resources, organized by IWRS, ISPI & RS Ahmedabad Chapter and Irrigation Department, Govt. of Gujarat, held on 27th December 1985 at SAC, Ahmedabad.

      Calla OPN Microwave Sensors for water

      “Microwave Sensors for Water Resources Survey Applications”

      Invited paper presented in the National Seminar on Remote Sensing of Water Resources, organised by IWRS, ISPI & RS Ahmedabad Chapter and Irrigation Department, Govt. of Gujarat, held on 27th December 1985 at SAC, Ahmedabad

      AK Sen, A Mitra, AK Dev Gupta, PK Karmakar, P Tarafdar, G Tarafdar, JS Sehra, MK Das Gupta, SN Ghosh, SS Rana and OPN Calla

      “Rain Attenuation of Millimeter Waves Measured Simultaneously for Vertical and Horizontal”

      Presented at the National Space Science Symposium held at Physical Research Laboratory, Ahmedabad on 21-24 December 1987.

      Antenna Systems for use in low-cost scatterometer to study the effect soil on scattering coefficient


      O.P.N. Calla, Md.S. Abbas, S. Bhattacharjee, B. Kalita, P.P.Saikai, Sanjeev K. Mishra

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Measurement of Complex Permittivity of Pure Diesel using Cavity Resonator Method and Two Point Method at X-band


       

      O P N Calla, Charu Sharma, Navin Bohra, Neha Gathania, Nitin Khandelwal, Paritosh Kalla, Saurabh Shukla, Dinesh Bohra

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Comparison of the Cavity Resonator Method & Two Point Method for the Measurement of Complex Permittivity of the Saline Water (High Loss Material)

      O P N Calla, Charu Sharma, Navin Bohra, Neha Gathania, Nitin Khandelwal, Paritosh Kalla, Saurabh Shukla, Dinesh Bohra

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Comparison Of Brightness Temperature Of Flooded Water With Pure Water At Different Angles Using Microwave Radiometer


       

                   O P N Calla, Dinesh Bohra and Rajesh Vyas, Rakesh Prasher, Abhishek Loomba,

                    Naveen Kumar.

                   Presented at National Symposium on Advances in Remote Sensing Technology and  

                   Applications with Special Emphasis on Microwave Remote Sensing Organized by          

                   Indian Society of Remote Sensing, Dehradun at SAC, Ahmedabad from December                                                           

                   16 - 17, 2008

      Study Of Delineation of Black Soil Areas Using Multifrequency Scanning Microwave Radiometer (MSMR) Data At 6.6 GHz.

       

      O P N Calla, Uttra Purohit, Deepti Sharma

                   Presented at National Symposium on Advances in Remote Sensing Technology and  

                   Applications with Special Emphasis on Microwave Remote Sensing Organized by          

                   Indian Society of Remote Sensing, Dehradun at SAC, Ahmedabad from December                                                            

                   16 - 17, 2008

      Measurement of Dielectric Constant of Pure and Saline Water at L Band and CJ Band of Microwave Frequency.


       

      O P N Calla, Dinnesh Bohra, Rajesh Vyas, Vishal Bharti, Jatinder Singh, Vikas Gupta, Jang Bahadur Singh.

      Presented at 7th Indian Conference on Microwaves Antenna, Propagation and Remote Sensing. (InCMARS-2008) held from 9th -11th December 2008.

      Variation of Brightness Temperature with Moisture Content at Different angles using Microwave Radiometer.


       

      O P N Calla, Dinesh Bohra, Rajesh Vyas, Rakesh Parasher, Abhishek Loomba, Naveen Kumar.

      Presented at 7th Indian Conference on Microwaves Antenna, Propagation and Remote Sensing. (InCMARS-2008) held from 9th -11th December 2008.

      Measurement of the Scattering Characteristics of Soil at 9.6 GHz using a FM-CW Scatterometer as a Function of Radar Illumination Conditions”

      Calla OPN and NS Pillai

       

      Presented in the URSI International Symposium on Microwave Signatures in Remote Sensing held at Toulouse, France between 16-20 January 1984.

      “Study of the Scattering Characteristics of Sandy Soil at X and K Bands for Different Look Angle and Polarisation Combination”

      Calla OPN, NS Pillai and VH Bora

       

      Presented in the URSI International Symposium on Microwave Signatures in Remote Sensing held at Toulouse, France between 16-20 January 1984.

      Microwave Radiometric Studies of Excess Attenuation Due to Water Vapour Content Injected During Rain

      AK Sen, AK Dev Gupta, SS Rana and OPN Calla

       

      Presented at the 2nd International Conference on Pattern Recognition and Digital Techniques held at Indian Statistical Institute, Calcutta, during January 6-9, 1986.

      Studies of Rain Attenuation at Millimeter Wave Length Over a 100M Path

      A Mitra, PK Karmakar, OPN Calla and SS Rana

      Presented in the International Union of Radio Science (URSI) Commission F Triennial Open Symposium on “Wave Propagation and Remote Sensing” to be held during 20-24 November 1995 at Ahmedabad, India.

      Derivation of Rain-Rate Statistics Over Indian Tropical Oceanic Regions from Dual-Frequency Topex Radar Altimetric Measurements

      SM Bhandari, AK Varma, S Barathy and OPN Calla

      Presented in the International Union of Radio Science (URSI) Commission F Triennial Open Symposium on “Wave Propagation and Remote Sensing” to be held during 20-24 November 1995 at Ahmedabad, India.

      Measurement of Dielectric Constant at Dry Soils of Assam and Meghalaya and Comparison with the Dry Soil of the Kashmir

       Calla OPN, A Baruah, B Das, K P Mishra, M Kalita, S S Haque

      International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2003), December 17-19, 2003.

      Design and Development of Circular Patch Antenna and Study of the Variation of its Characteristics with Different Feed Points

       

      O P N Calla, Dinesh Bohra, Subir Das, Maheh Gupta, Sukumar Mohapatra

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Design and Development of Scatterometer at Ku Band and Measurement of Scattering Coefficient for Different Rocks


       

      O.P.N.Calla, Dinesh Bohra, Sanjeev K. Mishra, Aarti Sharma, Giriraj Vyas, Hari Lohar, Ritika Somani

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      A Methodology for Marking of Land Water Boundary of Indian Coast using MSMR Data of IRS-P4 Satellite


       

      O.P.N. Calla and Sugandha Lohar

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Measurement of Scattering Coefficient of Wet Soil at Microwave Frequencies and Comparison with the Estimated Value

       

      O.P.N. Calla, K.C. Harit, Rajesh Vyas, Dinesh Bohra, Sanjeev Kumar Mishra, Narayankrishn Vyas, Prasant Thanvi

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Measurement of Dielectric Constant of Dry Soil using Wave Guide Cell Method with two different approaches at X band

       

      O P N Calla, Dinesh Bohra,  Sanjeev Kumar Mishra , Rajesh Vyas, Kapil Saraswat, Sumeet Ranga and Sunil Singh Choudhary

      Presented at International Conference on Radio Science (ICRS-2008), Jodhpur

      Comparison of Measured Scattering of Dry Soil at X Band with the Scattering Coefficient estimated using the Dielectric Constant


       

      O P N Calla, K C Harit,  Rajesh Vyas, Dinesh Bohra, Sanjeev Kumar Mishra, Kapil Saraswat, Sumeet Ranga and Sunil Singh Choudhary

      Presented at International Conference on Radio Science (ICRS-2008), Jodhpur

      Estimation of Scattering Coefficient of Natural Dry Soil for a Slightly Rough Surface at 2.1 GHz in L Band


       

      O P N Calla, Dinesh Bohra,  Sanjeev Kumar Mishra, Rajesh Vyas, B Bora, D Mushahary, N Paul, V Gupta and A Sadh

      Presented at International Conference on Radio Science (ICRS-2008), Jodhpur

      Measurement of Emitted Noise Power of Different Targets at 11 GHz using Improvised Ground Based radiometer System

       

      O P N Calla, Dinesh Bohra,  Sanjeev Kumar Mishra, Rohit jangid

      Presented at International Conference on Radio Science (ICRS-2008), Jodhpur

      Study of Radio Emission and Scattering Properties of soil and diesel and their Combination at Cj Band

       

       OPN Calla, Nima Ahmadian, Sayeh Hasan (ICMARS-2009),

      Measurment of Complex Dielectric Constant of Dry Soil at High Temperature upto 200 C at Microwave frequency

       O.P.N. Calla, Inder Singh Rathore, Ankush Soni (ICMARS-2009),

      Design and Simulation of Rectangular Corrugated Horn Antenna and Comparison of Simulation Results with Measured Results at Microwave Frequencies

      OPN Calla and Shikha Kalla (ICMARS-2010),

      Study of various Retrieval models for the estimation of Soil Moisture using Brightness Temperature at Microwave frequencies.

       

      OPN Calla, Pooja Asopa and Uttra Purohit (ICMARS-2010),

      Estimation of Dielectric Constant of Soil with Varying Moisture Content Using Measured Scattering Coefficient.

       

      OPN Calla and Dinesh Bohra (ICMARS-2010),

      Measurement of dielectric constant of Dry soil at temperature ranging from -196C to +200C and estimation of emissivity and scattering coefficient at 1.7GHz and 31.6GHz frequencies.

      OPN Calla and Inder Singh Rathore (ICMARS-2010),

      Measurement of complex dielectric constant of the Arawali rocks at temperature ranging from -10C to +50C at 5.825GHz, 9.472GHz and 13.4GHz frequencies.

      OPN Calla, Ankush soni, Shivraj Singh Rawat (ICMARS-2010),

      Measurement of dielectric of pure water using waveguide cell method with two point method at temperature ranging from 0C to 50C and estimation of emissivity and scattering coefficient at 5.31GHz frequency

      OPN Calla, Inder Singh Rathore, Ankush Soni, Devendra Singh Rajpurohit, Bhupesh Kumar (ICMARS-2010),

      Measurement of Complex Dielectric Constant Of Jodhpur And Jaisalmer Soil With Different Moisture Content And Estimation Of Emissivity And Scattering Coefficient at Microwave Frequencies 5.31GHz and 13.4GHz

            OPN Calla, Inder Singh Rathore, Ananya Gehlot, Heena Joshi, Jyoti Lodha

          (ICMARS-2010),

      Measurement of dielectric constant of terrestrial Analogue of the LUNAR soil at temperature ranging from -196C to +200C

       OPN Calla, Inder Singh Rathore (ICMARS-2010),

      Estimation of emissivity and scattering coefficient of terrestrial Analogue of the LUNAR soil at temperature ranging from -196C to +200C at L-band and J-band

      OPN Calla, Inder Singh Rathore (ICMARS-2010),

       
  • LIST OF PAPERS PRESENTED IN CONFERENCES  
       
      Calla OPN, Sundararajan Y, Louis CJ and Rao KS

      “Transponder System Design for Long Range Tracking by Radar”

      Presented in the Symposium on Electronics (Microwave Technology) at Tata Institute of Fundamental Research 25-27 February 1970.

      Calla OPN, Sunderarajan Y, Louis CJ and Rao KS

       

      “ A S-band Pulsed Radar Transponder”

      Presented in the Symposium on Electronics (Microwave Technology) at Tata Institute of Fundamental Research 25-27 Feb. 1970.

      Calla OPN A study

       

      “A Study of Attenuation and Angular Deviation of Radio Frequency Waves in Space Vehicle Communications”

      Presented in All India Convention of Instrumentation and Automation, Birla Institute of Technology, Mesra, Ranchi during 7-10 March 1970. 

      Shakil SM and Calla OPN a study

       

      “A Study of Satellite Telemetry Systems”

      Presented in All India Convention of Instrumentation and Automation, Birla Institute of Technology, Mesra, Ranchi during 7-10 March 1970.

      SS Rana and Calla OPN Design

       

      “Design, Development and Testing of J-band Parametric Amplifier”

      Presented in the Symposium on Creative Radar Technology held in October 1973 at LRDE, Bangalore.

      Calla OPN and NS Pillai system

       

      “System Design Aspects of Side Looking Airborne Radar for Earth Resources Survey”

      Presented in the Symposium on Creative Radar Technology held in October 1973 at LRDE, Bangalore.

      R Singh, Calla OPN, J Lal and V Malaviya

       

      “Components for Monopulse Radar Feed System”

      Presented in the Symposium on Creative Radar Technology held in

      October 1973 at LRDE, Bangalore.

      NS Pillai, Calla OPN, BV Balu and CK Kutty

       

      “On the Development of a Switchable Polariser for a Tracking Radar

      Presented in the Symposium on Creative Radar Technology held in October 1973 at LRDE, Bangalore

      Calla OPN Antenna

       

      “Antenna System Design and Tests”

      Presented in the Seminar on Electronics for the Preservation and Enforcement of Law and Order held in October 1973 at Jaipur by Institution of Electronics & Telecommunication Engineers (IETE).

      PNR Setty and Calla OPN

       

      “Wideband Voltage Tunable Composite Crystal Oscillator”

      Presented in the Seminar on Electronics for the Preservation and Enforcement of Law and Order held in October 1973 at Jaipur by IETE.

      Calla OPN Millimeter

       

      “Millimeter Wave Radio Astronomy”

      Presented in the Seminar on Infrared and Millimeter Range Astronomy held in February 1974 at Osmania University, Hyderabad.

      S Balasubramanian and Calla OPN

       

      “Tunable Impatt Oscillator”

      Presented in the Symposium on Microwave Technology held in February 1974 at National Physical Laboratory, New Delhi.

      N Narasimhan, OP Kaushik and Calla OPN

       

      “Critical Studies on Microwave Integrated Circuit”

      Presented in the Symposium on Microwave Technology held in February 1974 at NPL, New Delhi.

      Raghubir Singh, KN Shankara and Calla OPN

       

      “Dual Frequency Feed System for Satellite Earth Stations”

      Presented in the Symposium on Microwave Technology held in February 1974 at NPL, New Delhi.

      NS Pillai, Shankara KN, VK Koshy and Calla OPN

       

      “Optimisation of Aperture Efficiency of a Cassegrain Antenna Systems

      with Shaped Sub-reflector”

      Presented in the Symposium on Microwave Technology held in February 1974 at NPL, New Delhi.

      DS Kalsi and Calla OPN

       

      “Stripline Balanced Mixer”

      Presented in the Symposium on Microwave Technology held in February 1974 at NPL, New Delhi.

      HO Gautam and Calla OPN Plasma

       

      “Plasma Diagnostics with Microwaves”

      Presented in the Symposium on Microwave Technology held in February 1974 at NPL, New Delhi.

      Calla OPN Propagation

       

      “Propagation Studies at 13/18 GHz using ATS-6 Satellite”

      Presented in the Symposium on Solar Planetary Physics held at Physical Research Laboratory, Ahmedabad during January 22-24, 1976.

      Calla OPN and G Raju

       

      “Microwave Radiation from the Moon at 4 GHz”

      Presented in the Technical Session of the Astronomical Society of India held at U.P. Observatory, Naini Tal during 6-10 November 1976.

      Calla OPN, DS Kushwah and HO Gautam

       

      “Propagation Studies at Frequency Above 10 GHz and Millimeter Wave Attenuation Measurements at 13.2 GHz using an LOS Link”

      Presented in the 21st Technical Convention on 11 December 1977 by IETE, Delhi.

      Calla OPN and John Francis

       

      “STEP – Aims and Experiences”

      Presented in the “STEP” Seminar held at Space Applications Centre, Ahmedabad during 19-20 March, 1979.

      Calla OPN, G Raju, SS Rana and S Balasubramanian Micro

       

      “Microwave Radiometer Techniques for Diagnosis in Medical Applications”

      Presented in the Symposium on Biomedical Engineering, Osmania University, held on 24 June 1979.

      Calla OPN P Studites

       

      “Propagation Studies at Microwave Frequencies”

      Presented at the Technical Convention in the Session of Electromagnetics held between 11-15 January 1980 in Delhi by IETE.

      Calla OPN, ML Hasija, Kalishankar and GP Singh

       

      “Rising Trends of Satellite Communications in India”

      Presented in the Symposium on Communications held on 23-24 May 1980 by IETE, Calcutta.

      Calla OPN, S Barathy, RN Wadhwa, Kalishankar and R Gopalakrishnan

       

      “Satellite Conferencing Need for Indian Environment”

      Presented in the Symposium on Modern Trends in Communications held on 27-28 August 1980 at Ahmedabad by IETE, Ahmedabad Chapter.

      Calla OPN and DS Kushwah

       

      “Domestic Indian Satellite System for Broadcasting and Communication in India”

      Presented in the Symposium on Modern Trends in Communications held on 27-28 August 1980 at Ahmedabad by IETE, Ahmedabad Chapter.

      Calla OPN, SS Rana, G Raju and S Balasubramanian

       

      “SAMIR Payload Systems Characteristics and Performance”

      Presented during seminar-cum-workshop on Application of Bhaskara-II TV & SAMIR during 5-7 October 1982.

      Calla OPN, KN Shankara, S Barathy and S Deivendran

       

      "Microwave Radiation Hazards and Safety Measures”

      Presented in the seminar on Safety in Space Science and Technology held on 8-9 December 1982 at SHAR Centre, Sriharikota.

      Calla OPN, SS Rana, G Raju and S Balasubramanian Samir

       

      “SAMIR Payload on Bhaskara I & II”

      Presented in the INDO-USSR Seminar-cum-workshop on Space Research between 21-25 February 1983 at Bangalore.

      Calla OPN, NS Pillai, SS Rana, OP Kaushik, G Raju and S Balasubramanian

       

      “Microwave Sensors Developed by ISRO”

      Presented in the INDO-USSR Seminar-cum-workshop on Space Research between 21-25 February 1983 at Bangalore.

      Calla OPN Paper

       

      “Paper for presentation in Panel Discussion on Communications in 2000 AD”

      Presented in the 29th Annual General Meeting of IETE held on 11th February 1983 at Hyderabad.

      Calla OPN Electronics

       

      Electronics Systems for Education and Mass Communication”

      Presented in the National Symposium on Professional Electronics – Devices and Systems and Presentation of Commemorative Volume during 16-18 November 1984 at CEERI, Pilani.

      AD Vyas, AJ Trivedi and Calla OPN Complex

       

      “Complex Permittivity of Sandy Soils of Gujarat at Microwave Frequencies”

      Presented in the Symposium on “Remote Sensing in Agriculture” held on 27-28 February 1985 at Ahmedabad – organized by Indian Society of Photo Interpretation and Remote Sensing (ISPI&RS), Ahmedabad Chapter.

      AD Vyas, AJ Trivedi, Calla OPN, SS Rana and G Raju

       

      “Microwave Remote Sensing of Soil Moisture Over Bare Field at 31.4 GHz”

      Presented in the Symposium on “Remote Sensing in Agriculture” held on 27-28 February 1985 at Ahmedabad – organized by Indian Society of Photo Interpretation and Remote Sensing (ISPI&RS), Ahmedabad Chapter.

      Calla OPN Microwave Remote

      Calla OPN

      “Microwave Remote Sensing for Agricultural Applications”

      Invited paper presented in the Symposium in “Remote Sensing in Agriculture” held on 27-28 February 1985 at SAC, Ahmedabad – organised by Indian Society of Photo Interpretation and Remote Sensing (ISPI & RS), Ahmedabad Chapter.

      AK Sen, AK Dev Gupta, PK Karmakar, MK Das Gupta, SS Rana and OPN Calla Radiometric

       

      “Radiometric Studies Over Calcutta on the Water Vapour Line at 22.235 GHz”

      Presented at the Symposium Frontiers of Communication held at the Institution of Radio Physics & Electronics, University of Calcutta, December 1985.

      Tiwari PK, Ibrahim M and Calla OPN

       

      “Implementation and Testing of FFT Hardware through Microprocessor”

      Presented in the National Convention of Electronics and Telecommunication

      Engineers and Seminar on Digital Communications of Institution of Engineers (India), held at Jabalpur during 28-30 Dec. 1985

      Raman BS, Mehta AB, Gujaraty VR and Calla OPN

       

      “Data Acquisition and Control Unit for a Wide Band Scatterometer”

      Presented in the Annual Convention of Computer Society of India, Calcutta held in January 1986.

      AK Sen, A Das Gupta, AK Dev Gupta, MK Das Gupta, OPN Calla and SS Rana Diffraction

       

      “Diffraction Patterns Associated with Travelling Clouds Observed in Radiometric Measurements on 22.235 GHz”

      Presented at the National Space Science Symposium held at Gauhati University during February 19-22, 1986.

      AK Sen, AK Dev Gupta, PK Karmakar, MK Das Gupta, OPN Calla and SS Rana

      “Microwave Radiometric Studies of Excess Attenuation Due to Water Vapour Content Injected During Rain”

      Presented at the National Space Science Symposium held at Gauhati University during February 19-22, 1986.

      Calla OPN and OP Kaushik

       

      “Microlithography in Space Applications”

      Invited paper presented in the first National Symposium on Microlithography

      held in CEERI, Pilani during March 11-12, 1986.

      OPN Calla & S Barathy

       

      “Need Based Satellite Research for Improved and Expanded Communication Systems”

      Presented in the National Seminar on ‘Mission Orientation to Industrial R&D’ held in New Delhi – organized by SRMI during 30th March to 1st April, 1986.

      Calla OPN An Overview

       

      “Microwave Remote Sensing in Geological Applications – An Overview”

      Invited paper presented in the National Symposium on Remote Sensing in Geology held at SAC, Ahmedabad during 17-19 September 1986.

      OPN Calla, Raghubir Singh, SS Rana, S Barathy & MK Radhakrishnan

       

      "11/14 GHz Propagation Experiment and Results for Satcom Applications"

      Presented in IETE Symposium on Propagation Factors for Space Communication" held in IIT, Madras during 18-19 September, 1987.

      OPN Calla, Raghubir Singh, S Barathy & MK Radhakrishnan

       

      “An Empirical Relation between Hourly and One Minute Rain Rate”

      Presented in IETE Symposium on “Propagation Factors for Space Communication” held in IIT, Madras during 18-19 September, 1987.

      Calla OPN, R Singh, S Barathy and MK Radhakrishnan Classification

       

      “Classification of Rain Rate Regions for Propagation Applications”

      Presented at the National Space Science Symposium held at Physical Research Laboratory (PRL), Ahmedabad during 21-24 December 1987.

      AK Sen, PK Karmakar, MK Das Gupta, SS Rana and OPN Calla.

       

      “Radiometric Studies of Attenuation and Atmoshpheric Water Vapour at 22.235 GHz Over Calcutta”

      Presented and published in the IMAP Workshop at Trivandrum, sponsored by SAC, ISRO on April 1988.

      Cal1a OPN and Barathy S

       

      "Manpower Development in Electronics – Trends and Techniques"

      Presented at "All India Seminar on Human Resources Development in Electronics" organised by Institution of Engineers (India) at New Delhi during 2-3 March 1991.

      Calla OPN Development

       

      "Development of New Payload Services on INSAT-1B"

      Presented in the Seminar on 100 months of INSAT-1B organized by ISAC and ASI on 11th April 1992 at ISAC, Bangalore.

      Calla OPN, Bharathy S and Jeyamani M

       

      "VSAT Networks - Present and Future"

      Paper presented on 14.1.1994 during INFDTEK 94 held at Taj Palace Intercontinental New Delhi.

      Growth of Information Technology in Gujarat

      Calla OPN,

      Presented at the Technology Seminar on "E-Brains of 2000" and

      Computer Show 94 - organised by Computer Society of India

      Ahmedabad Chapter during 22-25 December 1994.

      Changing Scenario in Sate1lit e Communication

      Calla OPN and S Barathy

       

      Presented at the Technology Seminar on "E-Brains of 2000" and Computer Show 94 - organised by Computer Society of India Ahmedabad Chapter during 22-25 December 1994.

      Satellite Based Networking for Information.

      Calla OPN and Barathy S

       

      Presented on 24.12.1994 at the XX Annual Convention Exhibition of IEEE India Council and Bombay Section at Nehru Centre, Bombay during 21-24 December 1994.

      Satellite Communications for Fixed and Mobile Services

      Calla OPN and S Barathy

       

      Paper presented on 3.8.1995 at Hotel Taj Residency, Bangalore during National Seminar on “Wireless Technologies” organized by DoE & ITI.

      Computer Aided Design of Cassegrain Antenna

      Calla OPN and NS Pillai

       

      Presented in the Seminar on Radar and Microwave Communications, Dept. of Electronics and Communication Engg, University of Roorkee, Roorkee.

      Calla OPN and I Hannan

       

      “Estimation of Scattering coefficient of dry and wet soil with different moisture content at microwave frequencies”. National Conference on Study of Land Using Radio Techniques, Jan 18-19, 2000.

      Calla OPN, R Mishra, S P Purohit, A Bhattacharya

       

      “Choice of Frequency for Measurement of Water Salinity”. National Conference on Study of Land Using Radio Techniques, Jan 18-19, 2000.

      Development of a Low Cost Scatterometer


      O.P.N. Calla, Md.S. Abbas, S. Bhattacharjee, B. Kalita, P.P.Saikai, Sanjeev K. Mishra

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Design and Development of Rectangular Microstrip Patch Antenna


      O.P.N. Calla, M. Alam, D. Hazarika, L. Ramawat,

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Design and Characterization

      Design and Characterization of Corrugated Horn Antenna and Their use as Feeds for Paraboloidal Reflectors

      O.P.N. Calla, Md.S. Abbas, S. Bhattacharjee, B. Kalita, P.P.Saikai, Sanjeev K. Mishra

      Study of the Variation of Dielectric Constant of Dry Soil Irradiated by Microwaves.


      O P N Calla, M.Alam, D.Hazarika, L.Ramawat, Dinesh Bohra

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Retrieval of Brightness Temperature at 6.6 GHz for Vertical Polarization from MSMR Data


       

      O.P.N. Calla, Anil Kumar Soni, Sandeep Kumar, Sugandha Lohar, Vikas Parihar

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Study of Methodology for Image Generation Using Brightness Temperature Data


      O.P.N. Calla, Anil Kumar Soni, Sandeep Kumar, Sugandha Lohar, Vikas Parihar

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Retrieval and Image Generation for Geophysical Applications using MSMR Data


      O.P.N. Calla, Anil Kumar Soni, Sandeep Kumar, Sugandha Lohar , Vikas Parihar

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Study the Effect of Temperature on Dielectric Constant of Water at Microwave Frequencies


      O.P.N. Calla, Dinesh Bohra, Rajesh Vyas, Sanjeev K. Mishra

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Estimation of Emissivity of Saline Water & Saline Ice at Different Temperature at X Band.

      OPN Calla, Bitupan Saikia, Rajesh Vyas, Sanjeev K. Mishra

      Presented in Indian Conference on “Microwaves, Antenna, Propagation and Remote Sensing” from 20th –22nd December 2005 (InCMARS-2005).

      Application of Microwaves in space programme


      OPN Calla

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi

      Microwaves Application in remote sensing


      OPN Calla

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi

      Study of the electrical parameters of rocks at microwave frequency

       

      OPN Calla, Dinesh Bohra, Sanjeev Kumar Mishra, Rajesh Vyas and K C Harit

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi

      Effect of type of terrain on Microwave link at 35 GHz


      OPN Calla, Rajesh Vyas, Dinesh Bohra, Sanjeev Kumar Mishra and K C Harit

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi

      Study of seasonal variability of Himalayan snow using IRSP4 MSMR data


      OPN Calla and Sugandha Lohar

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi

      Designing of antenna system at microwave frequencies for study of solar emission..


      OPN Calla, Anshuman Purohit, Jayant Purohit and Dinesh Kachhawaha

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi

      Study of effect of microwave on the dielectric constant on vegetables.


      OPN Calla

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi

      Measurement of scattering coefficient of soil at microwave frequency ...


      OPN Calla, K C Harit, Rajesh Vyas, Dinesh Bohra and Sanjeev Kumar Mishra

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi

      IRSP4 MSMR data application in demarcation of vegetation covered areas in Rajasthan..


      OPN Calla and Vikas Parihar

      Presented in Golden Jubilee Symposium on Radio Science (INCURSI-2007) & National Physical Laboratory, New Delhi.

      Measurement Of Dielectric Constant Of Pure & Saline Water At Cj Band Of Microwave Frequency


                O P N Calla, Dinesh Bohra and Rajesh Vyas, Vishal Bharti , Jatinder Singh , Vikas

                 Gupta, Jang Bahadur Singh.

                 Presented at National Symposium on Advances in Remote Sensing Technology and  

                 Applications with Special Emphasis on Microwave Remote Sensing Organized by          

                 Indian Society of Remote Sensing, Dehradun at SAC, Ahmedabad from December 16-

                 17, 2008

      Measurement of Back-scattering co-efficient of pure water at 5.865 GHz frequency in the CJ band


            O P N Calla, Dinesh Bohra and Rajesh Vyas, Abhishek Sarma and Vivek Agarwal

                   Presented at National Symposium on Advances in Remote Sensing Technology and  

                   Applications with Special Emphasis on Microwave Remote Sensing Organized by          

                   Indian Society of Remote Sensing, Dehradun at SAC, Ahmedabad from December                                                           

                   16 - 17, 2008

      Study of Delineation of Rice Fields Using MSMR Data of IRS-P4 Satellite At 6.6 GHz.

      O P N Calla, Uttra Purohit, Meenakshi Chandel.

                   Presented at National Symposium on Advances in Remote Sensing Technology and   

                   Applications with Special Emphasis on Microwave Remote Sensing Organized by          

                   Indian Society of Remote Sensing, Dehradun at SAC, Ahmedabad from December                                                           

                  16 - 17, 2008.

      Rectangular Corrugated Horn Antenna

      O P N Calla, Shikha Kalla

      Presented at 7th Indian Conference on Microwaves Antenna, Propagation and Remote Sensing. (InCMARS-2008) held from 9th -11th December 2008.

      Solar Power Satellite.


      OP N Calla

      Presented at 7th Indian Conference on Microwaves Antenna, Propagation and Remote Sensing. (InCMARS-2008) held from 9th -11th December 2008.

      Study of Himalayan Snow using MSMR Data of IRS-P4 Satellite for grid 2.


      O P N Calla, Uttra Purohit, Meenakshi Sharma

      Presented at 7th Indian Conference on Microwaves Antenna, Propagation and Remote Sensing. (InCMARS-2008) held from 9th -11th December 2008.

      Temperature Controller


      O P N Calla, Dinesh Bohra, Priyanshu Soni.

      Presented at 7th Indian Conference on Microwaves Antenna, Propagation and Remote Sensing. (InCMARS-2008) held from 9th -11th December 2008.

      Study of Image generation of black soil areas using Multifrequency Scanning Microwave Radiometer.


      O P N Calla, Uttra Purohit, Meenakshi Chandel.

      Presented at 7th Indian Conference on Microwaves Antenna, Propagation and Remote Sensing. (InCMARS-2008) held from 9th -11th December 2008.

      Base Band Processor for Microwave Systems.


      O P N Calla, Dinesh Bohra, Gordhan Choudhary

      Presented at 7th Indian Conference on Microwaves Antenna, Propagation and Remote Sensing. (InCMARS-2008) held from 9th -11th December 2008.

      Pattern Analysis of Rectangular Corrugated Horn Antenna Frequency Range (2.6 – 5.85 GHz)

      O. P. N.  Calla, Shikha Kalla

           Presented at ATMS 2010 held from11-13 February, 2010, held at New Delhi

      INTERNATIONAL .


       Calla OPN, NS Pillai, OP Kaushik and S Sivaprasad

      “Temporal Study on Paddy (Rice) using X-band Scatterometer”

      Presented in the Thirteenth International Symposium on Remote Sensing of Environment, University of Michigan, Ann Arbor, 23-17 April 1979.

      High Resolution Microwave Brightness...

      RV Bhonsle,     SK Alurkar, SS Degaonkar, Calla OPN,G Raju, SS Rana and B Lokanadham

      "High Resolution Microwave Brightness Temperature Measurements during Total Solar Eclipse on February 16, 1980.

      Presented in the International Symposium on “Solar Eclipse” held at National Physical Laboratory (NPL), New Delhi from January 27-31, 1981.

      Empirical Relationship....

      PNR Setty, Calla OPN and PK Gupta

      “Empirical Relationship between Five Minute and Sixty Minute Integration Time Rainfall Data and Its Use for Microwave Link Design”

      Presented in the International Symposium on Microwaves and Communication during 29-30 December 1981 held at Indian Institute of Technology, Kharagpur

      Variation of Microwave Emission Characteristics Over Land with Polarisation and Aspect Angle A Study

      Calla OPN and G Raju

      Presented in the URSI International Symposium on Microwave Signatures in Remote Sensing held at Toulouse, France between 16-20 January 1984.

      19/31 GHz Radiometric Studies of Soil Moisture

      Calla OPN, G Raju and SS Rana

      Presented in the URSI International Symposium on Microwave Signatures in Remote Sensing held at Toulouse, France between 16-20 January 1984.

      Water Vapour Monitoring by Microwave Radiometer

      AK Sen, AK Dev Gupta, PK Karmakar, MK Das Gupta, SS Rana and OPN Calla

       

      Presented at the 2nd International Conference on Pattern Recognition and Digital Techniques held at Indian Statistical Institute, Calcutta, during January 6-9, 1986.

      Microwave Attenuation in Clouds Over Calcutta

      AK Sen, AK Dev Gupta, PK Karmakar, MK Das Gupta, OPN Calla and SS Rana

       

      Presented at the Second International Conference on Pattern Recognition and Digital Techniques held at Indian Statistical Institute, Calcutta during January 6-9, 1986.

      Propagation Studies at Space Applications Centre

      Calla OPN

       

      Invited paper presented in the Asia Pacific Micorwave Conference held in Delhi during 24-28 Feb. 1986, pp. 420-432.

      Microwave Radiometric Detection of Water Vapour Clouds in the Atmosphere

      AK Sen, AK Dev Gupta, PK Karmakar, T Bandyopadhyay, MK Das Gupta, SS Rana and OPN Calla

      Presented at the 6th International Symposium on Solar Terrestrial Physics, held at Tolous, France during July 30 and July 5, 1986.

      AK Sen, AK Dev Gupta, PK Karmakar, T Bandyopadhyay, OPN Calla and SSRana

       

      “Microwave Radiometric Detection of Water Vapour Clouds in the Atmosphere”

      Presented at the Sixth International Symposium on Solar Terrestrial Physics held at Tolouse, France during June 30 – July 5, 1986.

      Post Rain Water Vapour Attenuation Model from Radiometric Measurements at 22.235 GHz

      AK Sen, AK Dev Gupta, PK Karmakar, T Bancyopadhyaya, MK Das Gupta, SSRana and OPN Calla

      Presented at the 5th International Conference on Antennas and Propagation at the University of Warwick, UK organised by IEE, UK during 30 March – 2 April 1987.

      Post Rain Water Vapour Attenuation Model from Radiometric Measurements at 22.235 GHz....

      AK Sen, AD Dev Gupta, PK Karmakar, MK Das Gupta, OPN Calla and SS Rana

      Presented at the Symposium International Conference on “Antennas & Propagation” University of York, UK, organised by IEEE, UK during 30th March to 2nd April 1987.

      Scanning Beam Radiometry and Radiometric Measurements of Rain Height

       AK Sen, AK Datta, S Chattopadhyay, OPN Calla and SS Rana

      Presented in the International Union of Radio Science (URSI) Commission F Triennial Open Symposium on “Wave Propagation and Remote Sensing” to be held during 20-24 November 1995 at Ahmedabad, India.

      Measurement of Rain Injected Noise in the Millimeter Wave Band

      R Bera, PK Karmakar, AK Sen, OPN Calla and SS Rana

      Presented in the International Union of Radio Science (URSI) Commission F Triennial Open Symposium on “Wave Propagation and Remote Sensing” to be held during 20-24 November 1995 at Ahmedabad, India.

      Measurements on Ground-based Tropospheric Delay by Using 22.235 GHz and 31.4 GHz Radiometers

       AK Sen, M Rahaman, OPN Callla and SS Rana

       

      Presented in the International Union of Radio Science (URSI) Commission F Triennial Open Symposium on “Wave Propagation and Remote Sensing” to be held during 20-24 November 1995 at Ahmedabad, India.

      Passive Radiometric Measurements of Moisture Content of Soil and Vegetation

       AK Sen, MK Sengupta, SK Dutta, OPN Calla and SS Rana

      Presented in the International Union of Radio Science (URSI) Commission F Triennial Open Symposium on “Wave Propagation and Remote Sensing” to be held during 20-24 November 1995 at Ahmedabad, India.

      Rain Climatic Map for North-Eastern Regions of India

      Ashok Patel, S Barathy and OPN Calla

      Presented in the International Union of Radio Science (URSI) Commission F Triennial Open Symposium on “Wave Propagation and Remote Sensing” to be held during 20-24 November 1995 at Ahmedabad, India.

      Microwave Remote Sensing of Soil Moisture Over Bare and Vegetated Fields

      AD Vyas, AJ Trivedi, Calla OPN, SS Rana, SB Sharma and AB Vora

       

      Presented in the International Union of Radio Science (URSI) Commission F Triennial Open Symposium on “Wave Propagation and Remote Sensing” to be held during 20-24 November 1995 at Ahmedabad, India.

      Short-Hop 18 GHz Link for 250 MBPS Digital Signal

      OP Kaushik and Calla OPN

       

      Presented in the International Symposium on Digital Communication held at Motilal Regional Engineering College, Allahabad.

      A Digital Feedback System for Bit Synchroniser

      KK Bandhopadhyay and Calla OPN

       

      Presented in the International Symposium on Digital Communication held at Motilal Regional Engineering College, Allahbad.

      Sensing Electrical Parameters of Water through Microwave Frequencies-

      Calla OPN, R Mishra

      International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2003), December 17-19, 2003.

      Study of Dielectric Properties of Constituents of the Vegetation at Microwave Frequencies

      Calla OPN, Avdhesh Roop Rai, Deepak Mathur, Prannoy Mathur, Dinesh Bohra and Rahul Kalla,

      International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2003), December 17-19, 2003.

      Microwave Remote Sensing of Vegetation Canopy-

      Calla OPN, Sanjib Kumar Agarwalla, Dinesh Bohra, Sandip Ghosh and Rajesh Vyas

       

      Presented in 1st International Conference on Microwave, Antenna, Propagation & Remote Sensing (ICMARS-2003), Organized by International Centre for Radio Science, held at Jodhpur, December 17-19, 2003.

      Calla OPN, Dinesh Bohra, Sanjib Kumar Agarawalla, Sandip Gosh, Rajesh Vyas

       

      “Study of Dielectric Properties of the Rocks at Microwave Frequencies”, International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2003), December 17-19, 2003.

      Measurement of Dielectric Constant of Constituents of Neem Tree

      Calla OPN, Dinesh Bohra, Sanjib Kumar Agarawalla, Sandip Gosh, Rajesh Vyas

      International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2003), December 17-19, 2003.

      Calla OPN, Tapan Borah, Praveen Choudhary, Anahita Vyas, Dinesh Bohra, Gokul Panda, A K Das, Mainak

       

      “Model Generation for Prediction of Fades in Microwave Link over Water body”, International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2003), December 17-19, 2003.

      Image Generation for Microwave Remote Sensing using JAVA Language.

      Calla OPN, Meenakshi Mathur, Monika Upadhayay, Ramesh Punia, Praveen Choudhary

       International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2003), December 17-19, 2003.

      Microwave Remote Sensing of Soils..

      Calla OPN, K C Harit

      International Conference on Microwave, Antenna, Propagation & Remote Sensing (ICMARS-2003), December 17-19, 2003.

      Calla OPN, Sanjib Kumar Agarwalla, Dinesh Bohra, Sandip Gosh, Rajesh Vyas

       

      “Microwave Remote Sensing of Vegetation Canopy”, International Conference on Microwave, Antenna, Propagation & Remote Sensing (ICMARS-2003), December 17-19, 2003.

      Estimation of emissivity of pure water ice at different temperature at x-band.


      OPN Calla, Saikia Bitupan, Vyas Rajesh

      Presented at International Symposium on Snow Monitoring & Avalanches (ISSMA-2004), 12-16 April 2004.

      Measurement of dielectric constant of pure water ice at different temperatures at x-band.


      OPN Calla, Saikia Bitupan, Rajesh Vyas

      Presented at International Symposium on Snow Monitoring & Avalanches (ISSMA-2004), 12-16 April 2004.

      Comparative Study For Various Locations Over Rajasthan Using MSMR Data


      OPN Calla, Vikas Parihar, Naveen dutt Joshi, Gitanjali Chakravorty and

      Usha Rathore

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing (ICMARS-2006), December 20-22, 2006

      Identification Of Desert Area Of Rajasthan Using MSMR Data


      OPN Calla, Vikas Parihar, Naveen dutt Joshi, Gitanjali Chakravorty and

      Usha Rathore

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Study of MSMR Retrieved Data Using Map Generation And Representation Methodology Over Rajasthan


      O P N Calla, Usha Rathore, Gitanjali Chakravorty, Naveen dutt Joshi and Vikas Parihar

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Comparison of Brightness Temperature With Respect To Geophysical Parameters over Rajasthan


      O P N Calla, Usha Rathore, Gitanjali Chakravorty, Naveen dutt Joshi and Vikas Parihar

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Comparison of Coaxial Feed & Proximity Coupled Feed Technique in Circular Microstrip Patch Antenna


      O P N Calla, Dinesh Bohra, Subir Das, Maheh Gupta, Sukumar Mohapatra

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Study of MSMR Reterived Data Using Methodology of Map Generation and Representation over Himalayas


      O P N Calla, Mukul Madan, Nikhil Agarwal, Saurabh Kesarwani

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Study of Geophysical Parameters of Himalayan Region Using MSMR Data


      O P N Calla, Mukul Madan, Nikhil Agarwal, Saurabh Kesarwani

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Study of Food Preservation Aspect of Microwave Radiation


      O P N Calla, Dinesh Bohra, Sanjeev Kumar Mishra, Abhishek Shrimali, Ashish Purohit, Hitesh Modi, Puran Singh Panwar

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Study of Effect of Metal Foils on Direct Microwave Link


      O P N Calla, Dinesh Bohra, Sanjeev Kumar Mishra, Abhishek Shrimali, Hitesh Modi, Puran Singh Panwar

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Study of Effect of Wire Mesh on Microwave Link..


      O P N Calla, Dinesh Bohra, Sanjeev Kumar Mishra, Abhishek Shrimali, Ashish Purohit, Hitesh Modi, Puran Singh Panwar

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Estimation of Scattering Coefficient of Dry and Wet Samples of Rocks, using Small Perturbation Model

      O.P.N.Calla, Dinesh Bohra, Sanjeev K. Mishra, Aarti Sharma, Giriraj Vyas, Hari Lohar, Ritika Somani

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Design and Simulation of Microstrip Antenna at Microwave Frequencies


      O.P.N. Calla, Sugandha Lohar, Narayankrishna Vyas, Prasanth Thanvi

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Methodology of Data Retreival at 18 GHz from IRSP-4 MSMR for Snow Studies


      O.P.N. Calla, Sugandha Lohar

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Measurement of Dielectric Constant of ICE at 35 GHz


      O.P.N. Calla, Dinesh Bohra, Sanjeev Kumar Mishra and Rajesh Vyas

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Study of the effect of radome material on the radiation pattern of antenna at microwave frequency


      O.P.N. Calla, R.K. Tiwari, S.D. Vyas, K.C. Harit, Dinesh Bohra, Rajesh Vyas and Sanjeev Kumar Mishra

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Study of Patterns at Microwave Frequency in presence of metal screen


      O.P.N. Calla, S.D. Vyas, R.K. Tiwari, K.C. Harit, Dinesh Bohra, Rajesh Vyas and Sanjeev Kumar Mishra

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Measurement of Dielectric Constant of Dry and Wet Soil at X-band


      O.P.N. Calla, K.C. Harit, Rajesh Vyas, Dinesh Bohra, Sanjeev Kumar Mishra, Narayankrishn Vyas, Prasant Thanvi

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing(ICMARS-2006), December 20-22, 2006

      Study of Dielectric Measurement of Bikaner Ceramics (Western Rajasthan) at Microwave Frequencies


      O P N Calla Dinesh Bohra, Sanjeev Kumar Mishra Rahul  Srivastava  Sandeep Rankawat and J S Purohit

      Presented at 3rd International Conference on Microwave, Antenna, Propagation & Remote Sensing (ICMARS-2006), December 20-22, 2006

      Study of Emmision and Scattering Behaviour of Ice at Frequency 35.6 GHz


      O P N Calla Dinesh Bohra, Sanjeev Kumar Mishra  and Rajesh Vyas

        International Centre for Radio Science (ICRS) Jodhpur-342001

        Presented at International Workshop on Snow, Ice Glacier and Avalanches

       January 07-09, 2008 Mumbai, India

      Study of Emmission Behaviour of Dry and Wet Soil at Microwave Frequency..


      O P N Calla, Rajesh Vyas, Dinesh Bohra, Amit Arora

        International Centre for Radio Science (ICRS) Jodhpur-342003

       Presented at International Conference on Electronics, Computer and Communication

       Bangladesh

      Study of Scattering Behaviour of Dry and Wet Soil at Microwave Frequencies.-


                O P N Calla, K C Harit,  Rajesh Vyas, Dinesh Bohra

                International Centre for Radio Science (ICRS) Jodhpur-342003

      Presented at International Conference on Electronics, Computer and Communication

       Bangladesh

      Measurement of Dielectric Constant of Dry Soil at L Band


      O P N Calla, Dinesh Bohra,  Sanjeev Kumar Mishra, D Bora, D Mushahary, N Paul, V Gupta and A Sodh

      Presented at International Conference on Radio Science (ICRS-2008), Jodhpur

      Study of Dielectric Properties of Soyabean Oil at Ku Band


      O P N Calla, Dinesh Bohra,  Sanjeev Kumar Mishra, Pranab Chatterjee, Jashmin Kumar Das and Israul Haque

      Presented at International Conference on Radio Science (ICRS-2008), Jodhpur

      Study of Emmission behaviour of Groundnu Oil at different Frequencies in Ku Band

       

      O P N Calla, Dinesh Bohra,  Sanjeev Kumar Mishra, Pranab Chatterjee, Jashmin Kumar Das and Israul Haque

      Presented at International Conference on Radio Science (ICRS-2008), Jodhpur

      Measurement of Scattering Coefficient of Soil at 10 GHz using Ground Based Scatterometer

       

      O P N Calla, K C Harit, Rajesh Vyas, Dinesh Bohra,  Sanjeev Kumar Mishra , Kapil Saraswat, Sumeet Ranga and Sunil Singh Choudhary

      Presented at International Conference on Radio Science (ICRS-2008), Jodhpur

      Calibration of Ground Based Scatterometer at X Band


       

      O P N Calla, Dinesh Bohra,  Sanjeev Kumar Mishra , Rajesh Vyas, K C Harit,  Kapil Saraswat, Sumeet Ranga and Sunil Singh Choudhary 

      Presented at International Conference on Radio Science (ICRS-2008), Jodhpur

      Pattern Analysis of Rectangular Horn Antenna using CST


       

        OPN Calla, Himal P. Ghimiray, Manoj Soni, Chander Deep Singh (ICMARS-2009),

      Pattern Analysis of Rectangular Corrugated Horn Antenna..


                OPN Calla, Shikha Kalla, Nikhil Mathur (ICMARS-2009),

      Designing the Meander Line Antenna using IE3D


      OPN Calla, Shikha Kalla (ICMARS-2009),

      Suitable Antenna for Cellular Microwave Links


        OPN Calla, Sushrut Vyas, Shailendra Singh, Shailendra Gaur (ICMARS-2009),

      Design and Analysis of Patch Antenna Array using IE3D (Frequency 1030-1090 GHz)

               OPN Calla, Shikha Kalla, Nikhil Mathur (ICMARS-2009),

      Study of Effect of Dry & Flooded Soil on Microwave Propagation


      O P N Calla, Dinesh Bohra (ICMARS-2009),

      Factor Affecting Stability of Dicke Radiometer


      O.P.N.Calla, Dinesh Bohra, Priyanshu Soni, Manav Gupta

       (ICMARS-2009),

      Comparison of Different Types of Polarmatric Radiometers


      OPN Calla, Anshul Bhardwaj, Ashish Sharma, Saurabh Sharma

      (ICMARS-2009),

      Measurement of Dielectric Constant of Different Edible Pulses using Waveguide Cell Method at CJ Band

       

                OPN Calla, Cibaca Gandhi, Bhavna Singhal (ICMARS-2009),

      Estmation of Electrical Properties of High Saline Water contaminated by Diesel in Cj band

       

                OPN Calla, Sayeh Hasan, Nima Ahmadian (ICMARS-2009),

      Comparison of Forward Scattering Coefficient of Flooded Soil with Pure Water at Different

       

      O P N Calla, Dinesh Bohra (ICMARS-2009),

      Comparison of AMSRE and MSMR data over Rajasthan


      O P N Calla, Uttra Purohit, Pooja Asopa (ICMARS-2009),

      Delineation of Rivers of INDIA using MSMR Data of OCEANSAT – I


                 OPN Calla, Uttra Purohit, Sneha Asopa, Himanshu Soni, Tarun Jain

      (ICMARS-2009),

      Delineation of Water Bodies of INDIA using MSMR Data of OCEANSAT I


              OPN Calla, Uttra Purohit, Sneha Asopa, Himanshu Soni, Tarun Jain.

       (ICMARS-2009),

      Delineation of Soils of Rajasthan, Gujarat, Himachal Pradesh, Uttaranchal, Madhya Pradesh

      OPN Calla, Uttra Purohit, Geeta Lala, Sweta Bohra (ICMARS-2009),

      Broad Band Rectangular Horn Antenna Design and simulation at microwave Frequencies


      OPN Calla, Shikha Kalla, Sanjana Purohit, Radhika Vyas and Depeeka Purohit (ICMARS-2010),

      Study of forward scattering behavior of ARAVALI Rock at Microwave Frequencies.


      OPN Calla and Dinesh Bohra (ICMARS-2010),

      Study of Forward Scattering Behaviour of Soils with Different Wetness at Microwave Frequencies.


      OPN Calla and Dinesh Bohra (ICMARS-2010),

      Determination of variability of Brightness Temperature using SMOS over Indian Seas.


      OPN Calla,Uttra Purohit and Pooja Asopa (ICMARS-2010),

      To compare the In situ measurements of soil moisture and AMSRE soil moisture Data over SriGanganaga


      OPN Calla, Pooja Asopa and Uttra Purohit (ICMARS-2010),

       
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