Azimuth Displacement Indicator - a Multichannel SAR Technique for Moving Target Detection and Estimation

An alternative to the classical Displaced Phase Center Antenna (DPCA) and Along Track Interferometry (ATI) techniques is described for SAR processing of moving targets. It is implemented through a pre-focus and a post-focus multiplication with no need for channel co-registration. This technique is easily extendable from a dual-aperture to multi-aperture systems. Analytical derivations, presented herein, complement our previous experimental results.