Monitoring terrain motion in China by means of spaceborne SAR images

Abstract

In this work we recall a recently developed processing chain (called Quasi-Permanent Scatterers -QPS- technique) that, by analyzing all possible interferometric pairs in a given SAR data-set and by evaluating the spatial interferometric coherence, is able to exploit partially coherent targets to estimate the ground motion. The technique has been successfully applied in the Badong site in China for retrieving the local DEM and for individuating active landslides. The possibility of processing effectively short-term coherent scatterers will turn out particularly useful to process series of high-resolution SAR data with short repeat-cycles.