Title :
Overview of the active TerraSAR-X calibrators and first results
Author :
Lenz, Rainer ; Wiesbeck, Werner
Author_Institution :
Univ. Karlsruhe (TH), Karlsruhe
Abstract :
This paper describes the development and system concept for an active and highly integrated, digitally controlled SAR system calibrator. For precise and high-quality SAR data, precise ground targets are necessary for external calibration of the SAR data. Compared to passive targets, active radar targets like transponders offer more features. The recording of the transmitted radar signals from the satellite becomes possible and allows additional data analysis and data correction. A total of 18 active transponder and receiver systems and 16 receiver only systems were fabricated for the TerraSAR-X calibration campaign in summer 2007 [1], [2], [3]. TerraSAR-X is the first German spaceborne X-band SAR satellite mission.
Keywords :
calibration; radar receivers; radar transmitters; remote sensing by radar; spaceborne radar; synthetic aperture radar; active TerraSAR-X calibrators; active radar targets; active transponder; digitally controlled SAR system calibrator; external calibration; ground targets; radar receiver systems; spaceborne X-band SAR; transmitted radar signals; Calibration; Control systems; Data analysis; Digital control; Monitoring; Satellites; Sensor phenomena and characterization; Spaceborne radar; Temperature distribution; Transponders;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4423113