HIGH RESOLUTION INVERSE SYNTHETIC APERTURE RADAR IMAGING FOR VEHICULAR APPLICATION

Abstract

RADAR images of contiguous targets like vehicles on road often suffer from side lobe enhancement due to environmental effects. This leads to false alarm in target detection and also degradation in image quality. In this paper, the CLEAN algorithms are introduced to eliminate side lobe enhancement and significantly improve the target detection performance and image quality. The effectiveness of the CLEAN algorithm is demonstrated through the results. Also the hardware results show how excellent performance can be attained by combining the correlator and the CLEAN Deconvolver. Thus signal processing methods like cross correlation, FFTs, CLEAN on range data and CLEAN on Image are incorporated on radar return signal on polyphase coded transmitted waveform. Robustness thus achieved through such signal processing in target detection and imaging, is finally tested by creating interference and multipath in the channel.