13 June 2014 A fast Fourier transform (FFT)-based along track interferometry (ATI) approach to SAR-based ground moving target indication (GMTI)
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Abstract
Along-track interferometry (ATI) is used to detect ground moving targets against a stationary background in synthetic aperture radar (SAR) imagery. In this paper, we present a novel approach to multi-channel ATI wherein clutter cancellation is applied to each pixel of the multiple SAR images, followed by a Fourier transform to estimate range rate (Doppler). Range rate estimates allow us to compensate for the cross-range offset of the target, thus geo-locating the targets. We then present a number of benefits to this approach.
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Daniel D. Thomas, Daniel D. Thomas, Yuhong Zhang, Yuhong Zhang, } "A fast Fourier transform (FFT)-based along track interferometry (ATI) approach to SAR-based ground moving target indication (GMTI)", Proc. SPIE 9093, Algorithms for Synthetic Aperture Radar Imagery XXI, 90930T (13 June 2014); doi: 10.1117/12.2058265; https://doi.org/10.1117/12.2058265
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