Analysis of phase preservation for bistatic SAR interferometrie processing based on multiple phase center sampling

Interferometry synthetic aperture radar (InSAR) is a remote sensing technique for obtaining high-quality digital elevation mode (DEM). Without temporal decorrelation, the efficiency and accuracy of bistatic and multistatic SAR are better than the single-pass interferometry. Multiple phase center (MPC) SAR increases the spatial sampling rate to overcome the contradiction of wide-swath observation and high azimuth resolution. In order to improve DEM coverage and accuracy, bistatic InSAR with MPC technique is proposed in our research, this interferometric data acquisition mode provides an effective approach for high-quality DEM generation. Phase-precision is well preserved, and simulation results verify the feasibility of bistatic MPC InSAR.