Title :
COSMO-skymed, TerraSAR-X, and RADARSAT-2 geolocation accuracy after compensation for earth-system effects
Author :
Schubert, Adrian ; Small, David ; Jehle, Michael ; Meier, Erich
Author_Institution :
Dept. of Geogr., Univ. of Zurich, Zurich, Switzerland
Abstract :
A Synthetic Aperture Radar (SAR) sensor with high geolocation accuracy greatly simplifies the task of combining multiple data takes within a common geodetic reference system or Geographic Information System (GIS), and is a critical enabler for many applications such as near-real-time disaster mapping. In this study, the geolocation accuracy was estimated using the same methodology for products from three SAR sensors: TerraSAR-X (two identical satellites), COSMO-SkyMed (four identical satellites) and RADARSAT-2. Known errors caused by atmospheric refraction, plate tectonics and the solid-Earth tide were modeled and compensated during the analysis. Of the products analyzed, TerraSAR-X provided the highest absolute and relative geolocation accuracy.
Keywords :
geographic information systems; remote sensing by radar; synthetic aperture radar; tectonics; tides; COSMO-SKYMED geolocation accuracy; COSMO-SkyMed sensor; Earth-system effects; RADARSAT-2 geolocation accuracy; RADARSAT-2 sensor; SAR sensor; TERRASAR-X geolocation accuracy; TerraSAR-X sensor; atmospheric refraction; geodetic reference system; geographic information system; near-real-time disaster mapping; plate tectonics; solid-Earth tide; synthetic aperture radar; Accuracy; Atmospheric measurements; Atmospheric modeling; Geology; Global Positioning System; Satellites; Timing; COSMO-SkyMed; Geolocation; RADARSAT-2; SAR; TerraSAR-X;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350598
