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ENVISAT Interferometry for mapping and monitoring:preliminary results

Andrea Monti Guarnieri(1) and Y.L Desnos(2)

(1) Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
(2) ESA, Via Galileo Galilei, Frascati 00044, Italy

Abstract

In the paper we provide an overview of the techniques for getting repeat pass interferometric surveys by exploiting the very different ASAR modes: Image Mode, Alternating Polarization and Wide-Swath Mode. In particular, we summarize the conclusions of the ESA contract N. 14143/00/NL/GD “ENVISAT ASAR SCANSAR Interferometric Products”: - we briefly discuss the architecture of the modular processor, able to accept any of the cited modes, together with a DEM (if available, if not a global one like GTOPO30 or ENVI is assumed by default), - we detail the features of the new phase preserving WSM product, that ESA will soon add to its Level-1 products - we provide hints and refinement achieved after completion the of the validation phase.

Together with this technical description, we provide some examples of the final products (at least one in all the possible modes), achieved in the first year of ENVI SAT life, and we highlight the sensor applications in the fields of mapping and differential interferometry.

 

Full paper

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry