Phase synchronization implementation method and device for distributed InSAR (Interferometric Synthetic Aperture Radar) system

The invention relates to a method and a device for realizing phase synchronization of a distributed InSAR (Interferometric Synthetic Aperture Radar) system, and the method comprises the steps: constructing an independent phase synchronization pulse signal transmitting and receiving hardware channel, designing a phase synchronization and imaging integrated working time sequence, and achieving the opposite transmission and sampling receiving of a PRF (Pulse Radio Frequency)-level phase synchronization pulse signal; compared with a traditional phase synchronization mode of continuous wave opposite-transmission phase synchronization and pulse alternating opposite-transmission, the problems that the signal-to-noise ratio of continuous wave opposite-transmission phase synchronization is low, echo loss is caused by pulse type alternating opposite-transmission, inter-satellite position changes during alternating opposite-transmission, and the phase synchronization precision is reduced are solved; due to the fact that