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Proceedings Paper

Doppler synthetic aperture hitchhiker imaging
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Paper 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.

Paper Details

Date Published: 18 April 2010
PDF: 11 pages
Proc. SPIE 7699, Algorithms for Synthetic Aperture Radar Imagery XVII, 769903 (18 April 2010); doi: 10.1117/12.850023
Show Author Affiliations
Ling Wang, Nanjing Univ. of Aeronautics and Astronautics (China)
Can Evren Yarman, Houston Technology Ctr. (United States)
Birsen Yazici, Rensselaer Polytechnic Institute (United States)


Published in SPIE Proceedings Vol. 7699:
Algorithms for Synthetic Aperture Radar Imagery XVII
Edmund G. Zelnio; Frederick D. Garber, Editor(s)

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