Radar interferometric systems, either for topographic or surface deformation measurement, have played an increasing role in imaging of the Earth since the mid 1980s. By exploiting frequency, baseline and polarimetric diversity interferometric systems can be designed to address a wide variety of geophysical problems. These applications range from topographic map generation, measurement of surface deformation from natural and anthropogenic causes, and measurement of the vertical structure of canopies and ice volumes. In this talk we will present an introductory overview of some of major applications of radar interferometry and the basic phenomenology associated to these observations. For each application we will present the basic equations that govern the technique and its performance and indicate some of the challenges that remain to fully exploiting these data. The research described here was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
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