An Integrated Framework for Discontinuous Ground-Based SAR Deformation Monitoring

Discontinuous ground-based synthetic aperture radar monitoring (D-GBSAR) has gained increasing attention in the last five years, while the full processing framework has not been significantly reported. In this paper, a new full framework for D-GBSAR is presented, in which we integrate the advanced technique of image registration, permanent scatterer (PS) selection, phase filtering, repositioning error, and atmospheric phase compensation. Particularly, we reveal that the sensor’s spatial baseline is small thus making it relatively simple to registrate the images. Furthermore, we apply complex mean filtering to mitigate the stochastic noise for better performance. Thereafter, we utilize the newly proposed methods to perform the azimuth-based repositioning error and slant distance-based atmospheric phase compensation. Finally, typical experiments verify the effectiveness of the proposed method, which is comparable with the advanced method and showcases an important technical reference for D-GBSAR applications.