Combination of INSAR and GNSS Measurements for Ground Displacement Monitoring

Several attempts to combine GNSS and InSAR for deformation measurements have been published in the last years. In this work, we propose a global inverse method that combines phase measurements from GNSS and spaceborne radar interferometry to estimate the ground vertical displacement. It is based on the PS (permanent scatterer) and least squares approaches and considers non-ambiguous phases. The exploratory method is tested using simulated data.