A study of land subsidence with PS-InSAR method based on wavelet phase analysis

By estimating the phase information of stable natural reflectors or permanent scatterers of a set of SAR images, Persistent Scatterers for SAR Interferometry (PSInSAR) can be used to obtain the land subsidence information at milimeter level while the serious noises of multi-temporal SAR images which make it difficult. In this study, we study the influence of PS-InSAR method based on wavelet phase analysis to the PSs selection and surface deformation monitoring. We then use the method to process ENVISAT SAR images covering Jiaxing city in Zhejiang province in China. The experiment results have shown its effectiveness.