Synthetic Aperture Radar : A Focus on Current Problems.

M.S. Ranga Rao; P.R. Mahapatra

doi:10.14429/dsj.47.4040

M.S. Ranga Rao Defence Research & Development Laboratory, Hyderabad.
P.R. Mahapatra Defence Research & Development Laboratory, Hyderabad.

DOI: https://doi.org/10.14429/dsj.47.4040

Abstract

Synthetic aperture radar (SAR) is a powerful tool for mapping and remote sensing. The theory and operation of SAR have seen a period of intense activity in recent years. This paper attempts to review some of the more advanced topics studied in connection with madern SAR systems based on digital processing . Following a brief review of the principles involved in the operation of SAR, attention is focussed on special topics such as advanced SAR modelling and ffocussing techniques, in particular clutterlock and autofocus, Doppler centroid (DC) estimation methods involving seismic migration technique, moving target, biststic radar imaging , effects of system nonlinearities,etc.

Author Biographies

M.S. Ranga Rao, Defence Research & Development Laboratory, Hyderabad.

Mr. MS Ranga Rao obtained his ME in Electronics and Communication Engineering From Osmania University, Hyderabad in 1990. He Joined DRDO at the Defence Research & Development Laboratory (DRDL), Hyderabad His areas of research include: radar Singal Processing, synthetic aperture radars and image processing techniques.

P.R. Mahapatra, Defence Research & Development Laboratory, Hyderabad.

Dr PR Mahapatra received his ME and PhD both for the Indian Institute of Science (IISc) Bangalore . His areas of research include radar ,electronic navigational aids, navigation theory, aviation safety problem with particular reference to weather phenomena and air traffic control, and singal processimg. He has published over one hundred scientific reasearch papers . He is a Fellow of the Institute of Electronics and Telecommunication Engineerings (IETE),India and is a professional member of the Institute of Navigation, USA.