Abstract:

According to the presence of a squint angle for distributed satellites interferometric synthetic aperture radar (InSAR), this paper analyzes the effects on InSAR data processing. This effect, if not compensated, imposes strong limits on the performance of the SAR interferometry. Based on the analysis, this paper proposes new compensating techniques to mitigate the effects by displacing the SAR imaging Doppler center and implementing linear phase compensation, thus improving the accuracy of digital elevation model (DEM). The proposed method is simple to  implement and efficient. In the end, the computer simulation results verify the  analysis and validity of the method.