Validation of a High-Precision Phase Synchronization Approach for Bi-Static SARs Through Universal Electronic Measuring Instruments

Bistatic synthetic aperture radar (BiSAR) system faces significant phase synchronization challenges due to its distributed platform. This paper theoretically analyzes the working principle of a bidirectional synchronization link and proposes a method for extracting compensation phase using the single frequency continuous wave signals. A high-precision phase synchronization compensation algorithm is applied in imaging simulations to compare results under different frequency source conditions, verifying the algorithm's accuracy. Finally, a bistatic SAR phase synchronization system is constructed with universal electronic instruments, and phase synchronization experiments using single frequency continuous wave signals are conducted. Experimental results demonstrate that the system effectively verifies phase synchronization accuracy, providing valuable references for subsequent engineering design.