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Multi - channel SAR Ground Moving Target Detection and Velocity Estimation

Aiming at the problem that the moving target in ground moving target detection (GMTI) of synthetic aperture radar (SAR) is difficult to detect in clutter, this study presents a method for ground moving target detection and velocity estimation in a multi-channel synthetic aperture radar system. This method first compensates the motion of the original image, and then constructs a phase compensation function to compensate the phase of the three channels. Then, the position is registered according to the time domain characteristics of Fourier transform. Finally, the threshold phase threshold is set to detect the moving target in the clutter background and noise signal, and the velocity of the moving target is measured. In addition, part of the data is simplified and optimized to achieve a more efficient GMTI. The effectiveness and feasibility of the proposed method are verified by simulation experiments.