Depolarization of Microwave/millimeter Wave in Sand and Dust Storms

Abstract

A theoretical investigation has been carried out to evaluate the effect of depolarization on the propagation of microwave/millimeter wave in sand and dust storms. The storm is considered to have three main constituents i.e, sand, silt and clay. An equation has been developed for depolarization in which the concept of scattering by dipole as well as back scattering has been utilized for this purpose. It has been found that the depolarization and loss due to depolarization caused by dust particles depend directly on orientation of incident beam, frequency and particle density. The results obtained are in good agreement with experimental results reported eariler. This verifies the accuracy of theory developed.

Indexing terms:

• Millimeter waves
• Depolarization
• Visibility
• Loss

Additional information

Notes on contributors

S K Srivastava

Sidhatri Kumar Srivastava, born on 10 February 1965 obtained MSc, MTech, PhD Presently he is Assistant Professor in the Department of Physics, Government of PG College. He has teaching experience in UG Classes for 09 years and in PG classes for 9 years. He has published 32 journals and proceedings. His current area of research interest are Microwave Propagation, Microwave remote Sensing, Microwave Ferrities, Effect of Microwave Radiation on Biological Tissue, Microwave Ferrities.

B R Vishwakarma

BR Vishvakarma was born in Dhananjaipur, Jaunpur (UP), India in 1944. He received his BSc (Engg), and PhD degree in Electronics Engineering from Banaras Hindu University in'1969, 1972, and 1977 respectively. From 1973 to 1975 he was a senior research fellow in Electronics Engineering Department, I.T. (BHU) where he carried out his research work on Microwave Scattering and Ferrite Devices. From 1980 to 1984, he was visiting Professor at Mosul University, Iraq. In 1984 he joined as a reader in the Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, India, where presently he is working as Professor of Electronics Engineering. His professional interests include the areas of microwave and millimeter wave propagation, radar, scattering, ferrite devices, electronic scanning antenna, microstrip antenna, piezoelectric effects in bone, electromagnetic interaction (both energetic and informational) with biological media.

His two papers on microwave/millimeter waves propagation were awarded certificate of merit (1993, 1994) and a paper on microstrip antenna was awarded the Institution Medal of Institution of Engineers for 1996–97. He has been listed in Reference Asia, Learned Asia, Biography International, International Directory of Distinguished Leadership (USA).

He has published more than 150 research papers in the international reference journals and proceedings. He has also published one monograph on Microwave ferrite Junction Circulators and a text book entitled Electromagnetic Fields and Applications.

Alongwith the membership of IEEE (USA), he is also a life member of India Science Congress Association, fellow of Institution on Electronics and Telecommunication Engineers (India) and member of New York Academy of Sciences, NY (USA).