Illumination synchronization is the key technology for distributed interferometric SAR systems.A novel illumination synchronization method based on the maximum coherence is proposed.Then
the Doppler centroid frequency and the image SNR loss of bistatic mode SAR are analyzed theoretically.The advantages of the method compared with the traditional illumination synchronization method are presented by analyzing the effect of the interferometric image pair coherence、the number of independent looks for interferometric phase estimation and the error of interferometric coregistration time.A simulation which contains full process of InSAS system is carried out
The simulation results indicate that this method can improve the interferometric performance of the distributed InSAR system effectively.