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Long term system monitoring of performance stability - Current status of TerraSAR-X and TanDEM-X satellites

Schmidt, Kersten and Castellanos Alfonzo, Gabriel and Bachmann, Markus and Böer, Johannes and Polimeni, Donata and Tous Ramon, Núria and Schwerdt, Marco and Schulze, Daniel (2013) Long term system monitoring of performance stability - Current status of TerraSAR-X and TanDEM-X satellites. CEOS SAR Workshop on Calibration and Validation (CEOS SAR CalVal), 2013-10-15 - 2013-10-18, St. Hubert, Canada.

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Abstract

The TerraSAR-X and the TanDEM-X satellite are operated to enable two missions in parallel: the TerraSAR X and the TanDEM X mission for scientific and commercial applications providing a multitude of SAR products of high accuracy and reliability. After launch the whole SAR system of both satellites was successfully calibrated and verified during the commissioning phase: in 2007 for TerraSAR-X and in 2010 for TanDEM-X. In order to ensure a reliable and stable operation of both systems and to guaranty the excellent quality of their SAR data products, both systems have been constantly monitored since start of the operational phase. Based on previous evaluations, this paper presents the latest results of different Long-Term System Monitoring (LTSM) tasks and demonstrates the remarkable performance of both systems since launch. Long term statistics over the mission lifetime are established by using the following system relevant parameters and instrument characteristics: • Gain and phase stability of transmit/receiver modules (Internal Calibration) • Temperature behavior of front end panels • Differences between measured antenna patterns and reference patterns acquired over the Amazon rainforest (Relative Radiometric Calibration) • Stability of the radar cross section, the integrated and the peak to side lope ratio of deployed reference targets (Absolute Radiometric calibration) • Geometric resolution in azimuth and range direction • Doppler centroid stability

Item URL in elib:https://elib.dlr.de/86189/
Document Type:Conference or Workshop Item (Speech)
Title:Long term system monitoring of performance stability - Current status of TerraSAR-X and TanDEM-X satellites
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schmidt, KerstenUNSPECIFIEDUNSPECIFIED
Castellanos Alfonzo, GabrielUNSPECIFIEDUNSPECIFIED
Bachmann, MarkusUNSPECIFIEDUNSPECIFIED
Böer, JohannesUNSPECIFIEDUNSPECIFIED
Polimeni, DonataUNSPECIFIEDUNSPECIFIED
Tous Ramon, NúriaUNSPECIFIEDUNSPECIFIED
Schwerdt, MarcoUNSPECIFIEDUNSPECIFIED
Schulze, DanielUNSPECIFIEDUNSPECIFIED
Date:17 October 2013
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:SAR, TSX, TDX, monitoring
Event Title:CEOS SAR Workshop on Calibration and Validation (CEOS SAR CalVal)
Event Location:St. Hubert, Canada
Event Type:international Conference, Workshop
Event Dates:2013-10-15 - 2013-10-18
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Projekt TanDEM-X
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Schmidt, Dr. Kersten
Deposited On:03 Dec 2013 13:38
Last Modified:31 Jul 2019 19:43

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