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TerraSAR-X Calibration Status - 2 Years in Flight

Schrank, Dirk and Schwerdt, Marco and Bachmann, Markus and Döring, Björn and Schulz, Clemens (2009) TerraSAR-X Calibration Status - 2 Years in Flight. In: Proceedings of the CEOS SAR Workshop on Calibration and Validation (CEOS SAR CalVal). CEOS SAR Workshop on Calibration and Validation (CEOS SAR CalVal), 2009-11-17 - 2009-11-19, Passadena, USA.

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As TerraSAR-X, launched in June 2007, is an operational scientific mission with commercial potential, product quality is of paramount importance. The success or failure of the mission is essentially dependent on the calibration of the TerraSAR-X system ensuring the product quality and the correct in-orbit operation of the entire SAR system. Based on the excellent calibration results achieved during the commissioning phase after launch, continuing calibration guarantees a stable product quality and monitors the correct operation of the entire SAR system during whole life time of TerraSAR-X. Therefore, one essential task is long term system monitoring (LTSM) performed by periodic measurements over rainforest and permanently deployed reference targets, to ensure stable antenna patterns and constant radiometric accuracy of the instrument. In addition to regular LTSM measurements, an extended re calibration of the TerraSAR-X system was performed in July 2009. In contrast to the nominal LTSM task several beams for a wide range of incidence angles have been measured against a multitude of reference targets. Due to this great amount of different measurements precise results based on reliable statistics have been achieved. The paper describes the different activities performed for LTSM and re calibration of TerraSAR-X and discusses the results.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:TerraSAR-X Calibration Status - 2 Years in Flight
AuthorsInstitution or Email of Authors
Schrank, Dirkdirk.schrank@dlr.de
Schwerdt, Marcomarco.schwerdt@dlr.de
Bachmann, Markusmarkus.bachmann@dlr.de
Döring, Björnbjoern.doering@dlr.de
Schulz, Clemensclemens.schulz@dlr.de
Journal or Publication Title:Proceedings of the CEOS SAR Workshop on Calibration and Validation (CEOS SAR CalVal)
Keywords:TerraSAR-X; re-calibration; long term system monitoring
Event Title:CEOS SAR Workshop on Calibration and Validation (CEOS SAR CalVal)
Event Location:Passadena, USA
Event Type:international Conference
Event Dates:2009-11-17 - 2009-11-19
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Projekt TerraSAR-X Kalibration und Projektunterstützung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Dirk Schrank
Deposited On:20 Oct 2009 16:15
Last Modified:15 Jan 2010 01:53

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