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Computational Burden in Moving Target Detection in Multi-Channel SAR using Phase Interferometry
October 2009
P. K. Sanyal, The MITRE Corporation
D. M. Zasada, The MITRE Corporation
R. P. Perry, The MITRE Corporation
ABSTRACT
The authors have shown in several earlier papers that large ground moving targets can be detected fairly reliably via phase-interferometry in multi-channel Synthetic Aperture Radar (SAR) images of the ground. In a interferometric phase image, all points on the ground nominally appear as a continuum of phase differences while the moving targets appear as discontinuities. By detecting these anomalies, it is possible to detect moving targets in the SAR.
When the target radar cross section (RCS) is small, the target return is dominated by and often lost in the ground clutter. The authors have shown that the detectability of small-RCS moving targets in multi-channel SAR can be enhanced by a direct, channel-to-channel cancellation of the ground clutter.
In this paper we discuss the computational burden in the moving target detection process involving direct channel-to-channel clutter cancellation process.
Additional Search Keywords
Computational burden, Surface Moving Target Indication (SMTI), Keystone Formatting, Clutter Cancellation, SAR Phase Interferometry
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