A survey of differential SAR interferometry for surface displacement monitoring

Differential synthetic aperture radar interferometry (DInSAR) is a well-established technique, able to measure very small movements of the terrain over time. It is used for the monitoring of subsidence, volcanoes, landslides and soil instability, for the measurement of soil deformations caused by earthquakes, and for the measurement of glacier movement velocity. This paper is the summary of a workshop presentation in which the basic theory of the DInSAR technique is presented, the main implementation approaches are illustrated from an "historical" perspective, and some applications are described.