Novel registration technique of InISAR and InSAR

In InISAR system, the pixels between two ISAR images derived from corresponding antennas usually do not register properly without prior compensation. A three-dimension motion compensation method, or 3D focusing, is put forward in this paper. While the multi-antenna-pair configuration in radar system, the angular motion parameters both in the azimuth and pitching are estimated accurately and the phase unwrapping processing can be avoided in the procedure of obtaining phase unambiguous. Simulation data is used to illustrate the accuracy of the proposed method. The method has also been extended to stripmap SAR for the interferometric 3D imaging of moving and/or man-made objects.