Research on Surface Deformation Application Based on Ascending and Descending Orbit InSAR Technology
Based on SBAS-InSAR technology, this experiment uses 10 images of ascending orbit and 2 images of descending orbit of Sentinel-1A data acquired from January to December in 2017. Through a series of processing and analysis of the data, the deformation field of ascending and descending orbit line of sight and the accumulated shape variable of ascending and descending orbit line of sight in time series are obtained. By comparing with GNSS measurement data in the study area, the accuracy of the application of ascending and descending orbit InSAR technology in surface deformation monitoring and the change law of surface deformation were verified, which accumulated experience for the further research of ascending and descending orbit InSAR technology.