Continuous and systematic tracking of ground displacement using satellites data is a technique for mapping and monitoring of ground deformation phenomena, acting as a key information for risk mitigation and to design early warning systems. Using interferometric techniques and a set of radar images acquired at different times from the same acquisition geometry, it is possible to measure ground displacements at milimetric level. In the last decade, Synthetic Aperture Radar (SAR) data have been widely used to detect and measure ground deformation phenomena. Either ground-based, airborne or satellite-borne, radar sensors paved the way to a variety of applications ranging from subsidence monitoring to landslide analyses, monitoring of engineering infrastructures (dam, bridges, building, tunnels, road and railways) and geotechnical and Mining industries.