Error Analysis of the Two-pass Approach in Spaceborne D-InSAR

Spaceborne differential interferometry is a potential deformation monitoring technology. Error analysis is very important for the application and enhancement of this technology. In this paper, various errors are decomposed and classified according to the principle of mutual independence, and finally an error transfer model is established. On this basis, the interferometric phase error is decomposed in detail, which improves the problem that the predecessors did not fully consider the processing error when analyzing the phase error.