Estimation of ground deformation in mountain areas with improved SAR interferometry

Persistent scatterers synthetic aperture radar interferometry (PSI) is a powerful remote sensing technique to detect the subsidence and landslides with an accuracy of millimeters. Distributed scatterers (DS) can be extracted to increase the measurement points with preserved Persistent scatterers (PSs), especially in non-urban areas covered with vegetation. In the experiment, we selected a set of SAR images of Radarsat-2 satellite, covered Mao country area, to detect the subsidence during the six months. An improved method has been presented to optimize measurement points for applying the InSAR technique to monitor the deformation of mountain areas through processing small scales full-polarization SAR Images.