Parameter estimation for distributed scatterers using high resolution SAR data

In this paper, a new approach is introduced for deformation monitoring with a focus on distributed scatterers (DSs), wherein, there is no need to unwrap the differential interferograms and the deformation is mapped at object resolution. It is based on a robust object adaptive parameter estimation using single look differential interferograms, where, the local tilts of deformation velocity and local slopes of residual DEM in range and azimuth directions are estimated. A 2D-model deformation integration is then performed using Bayesian inference to get the absolute deformation. This paper presents the technical details and a processing example of this newly developed algorithm using high resolution spotlight TerraSAR-X data of Lueneburg in Germany.