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18 April 2010Analysis of motion disambiguation using multi-channel
circular SAR
Combining moving target indication (MTI) radar with synthetic aperture radar (SAR) is of great interest to
radar specialists, in terms of improving multiple-target tracking in large, urban scenes. A major obstacle to such
a merger are ambiguities induced by mution. Using statistical bounds we quantify the improvement of moving
target localization with multi-channel SAR over single-channel SAR and the more traditional MTI technique of
displaced phase center array (DPCA) processing. We show that the potential for substantial improvements in
localization performance is borne out by practical estimators based on sparse reconstruction algorithms, whose
performance approach statistical bounds, even under clutter. We also outline a parallelization scheme for the
nonquadratic regularized sparse reconstruction technique to utilize clusters for processing large datasets.
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Ahmed R. Fasih, Carl W. Rossler, Joshua N. Ash, Randolph L. Moses, "Analysis of motion disambiguation using multi-channel circular SAR," Proc. SPIE 7699, Algorithms for Synthetic Aperture Radar Imagery XVII, 76990J (18 April 2010); https://doi.org/10.1117/12.850233