Abstract
ABSTRACTGround moving target indication (GMTI) is an important application of future multi-channel high-resolution wide-swath (MC-HRWS) synthetic aperture radar (SAR) system. This paper improves the extended displaced-phase-center antenna (EDPCA) method for efficient GMTI with a MC-HRWS SAR System. This processing method called improved EDPCA is derived in this paper and is applied to simulated data and real data in order to validate the theory. Compared with EDPCA, the improved EDPCA can decrease the degrees of freedom (DOFs) required by GMTI processing and the false alarm rate induced by the ambiguous image of moving target. In addition, signal-to-noise ratio (SNR) loss of moving target caused by linear range cell migration (RCM) can be avoided without a priori knowledge of the radial velocity.
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