Doppler synthetic aperture hitchhiker imaging

Ling Wang; Can Evren Yarman; Birsen Yazici

doi:10.1117/12.850023

18 April 2010 Doppler synthetic aperture hitchhiker imaging

Ling Wang, Can Evren Yarman, Birsen Yazici

Proceedings Volume 7699, Algorithms for Synthetic Aperture Radar Imagery XVII; 769903 (2010) https://doi.org/10.1117/12.850023
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

We consider passive airborne receivers that use backscattered signals from sources of opportunity transmitting fixed-frequency waveforms, which we refer to as Doppler Synthetic Aperture Hitchhiker (DSAH). We present a novel image formation method for DSAH. Our method first correlates the windowed signal obtained from one receiver with the windowed, filtered, scaled and translated version of the received signal from another receiver, and then uses the microlocal analysis to reconstruct the scene radiance by the weighted-backprojection of the correlated signal. This imaging algorithm can put the visible edges of the scene radiance at the correct location, and under appropriate conditions, with correct strength. We show that the resolution of the image is directly related to the length of the support of the windowing function and the frequency of the transmitted waveform. We present numerical experiments to demonstrate the performance of the proposed method.

Citation Download Citation

Ling Wang, Can Evren Yarman, and Birsen Yazici "Doppler synthetic aperture hitchhiker imaging", Proc. SPIE 7699, Algorithms for Synthetic Aperture Radar Imagery XVII, 769903 (18 April 2010); https://doi.org/10.1117/12.850023

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