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The Influence of Rebound Jamming on SAR GMTI

By: Huang, L.; Zhao, G.; Shen, Z.; Dong, C.;

2015 / IEEE

Description

This item from - IEEE Letter - Geoscience - Ground moving-target indication (GMTI) has been extensively used in the measuring of ocean surface currents and ground traffic. The influence of rebound jamming on synthetic aperture radar (SAR) GMTI is studied in this letter. The rebound jamming signal is either deceptive or barrage jamming according to the time delay. When the time delay between each pulse is constant, the jamming focused on a morphed image of the imaging area. After displaced phase-center antenna (DPCA) processing, the image with azimuth near the jammer's azimuth will be canceled similar to stationary targets, and the other part of the DPCA image remains. When the time delay is random between each pulse, the rebound jamming is barrage jamming for both the SAR image and the DPCA image. The validity of the proposed method is verified by theoretic analysis and simulation results.