A Synchronization Error Separated Method for Bistatic SAR Based on Variational Mode Decomposition Techniques

The separated platforms of a bistatic synthetic aperture radar (SAR) introduce synchronization error in the echo, resulting in offset and defocused target position and other characteristics. To deal with the problem, this paper firstly analyzes the synchronization error characteristics, then proposes a synchronization error separated method based on variational mode decomposition techniques, and ultimately uses the echo after the error separation to get the high precision SAR imaging results. Simulation experiment results verify the effectiveness of the proposed method.