Subsurface topography mapping in deserts using two frequency SAR interferometry

摘要

The progress in the development of a new two frequency InSAR system for mapping the subsurface topography in deserts and arid regions is presented. The proposed system consists of a Ka-InSAR for mapping the top interface topography and a VHF-InSAR for mapping the subsurface topography. The required modifications in conventional InSAR inversion to allow for height estimation in the presence of the top layer are then presented. Some of the image distortions that occur in the SAR images are also presented. Scaled model measurements were performed to verify the operation of the proposed system.