Interferometric Phase Generation of In-CSAR Based on Improved BPA

Inhalt:
In recent years, Synthetic Aperture Radar Interferometry (InSAR) technology has attracted wide attention from researchers. Compared with the traditional linear InSAR, the circular InSAR (In-CSAR) system can obtain more information through multi-angle observation. Under the condition of multi-angle imaging, the time domain algorithm with excellent phase preserving can obtian more accurate SAR image. Based on time domain algorithm, this paper introduces a new approach for interferometric phase generation of In-CSAR by using improved back projection algorithm (BPA). Unlike the traditional BPA, the improved BPA can extract more accurate interferometric phase through phase compensation. The processing results of L-band repeat-pass real data verify the effectiveness and practicability of the proposed algorithm.