Técnicas de georreferenciación precisa de datos interferométricos de radar orbital y aerotransportado

Abstract

The interferometric techniques allow the generation of digital elevation models (DEM) from data collected by synthetic aperture radars (SAR). In this paper a geocoding method applied to ERS-1/2 data is proposed. It is based on an exact knowledge of the orbits, a step from phase to height in slantrange and, finally, a projection and interpolation to generate a final map in UTM coordinates. Next, a technique evaluated in the airborne case is also presented. It is able to relate directly the interferometric phase of every point of the image to its position in a global reference system.