An InISAR 3-D Imaging Method Based on Joint Cross-Time-Frequency Distribution

The realization of former Interferometric Inverse Synthetic Aperture Radar(InISAR)includes every antenna's ISAR imaging and interferometry through every antenna's ISAR images.Unlike the former InISAR imaging method,a new InISAR 3-D image processing method based on joint cross time-frequency distribution is proposed.This method can acquire scatters separation and interferometry at the same time by using joint cross-time-frequency distribution images which are constructed by the signature data acquired from three interferometric antennae,and the cross-term interference in the distribution can then be suppressed efficiently by using Radon transform.The simulation results show that this proposed method is validity with high time frequency resolution for 3-D image reconstruction of both calm moving and maneuvering target.