Abstract:

This paper presents a new method for ground moving target indication (GMTI) and velocity estimation based on the interferometric synthetic aperture radar (InSAR) system. Under the circumstance of terrain interferometric phase and velocity phase coupling, this method takes advantage of the coherence information of neighboring pixel pairs to compensate terrain interferometric phase. To suppress the increasing clutter degree of freedom with the terrain induced by long acrosstrack baseline, the joint pixel method is adopted to improve the performance of GMTI and the accuracy of velocity estimation. Simulation rusults verify the validity and superiority of the proposed algorithm.