Scansar Differential Interferometry and Wet Delay Correction: Case Studies in Dangxiong, Tibet

ScanSAR is a synthetic aperture radar (SAR), which has a very wide image swath. This provides a new option for interferometric applications. It makes the large scale deformation observation easier to implement. In this paper, we applied ScanSAR differential interferometry in Dangxiong, Tibet to observe the crust deformation there. However, the accuracy of ScanSAR interferometry is also affected by water vapour in the atmosphere. In our work, we tried to correct the wet delay using synchronous MERIS integrated water vapour products. In the end of this paper, the advantages and problems of ScanSAR interferometry are concluded.