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TandDEM-X Calibration Assessment after Redundancy Switch

Klenk, Patrick and Schmidt, Kersten and Kraus, Thomas and Steinbrecher, Ulrich and Schwerdt, Marco (2021) TandDEM-X Calibration Assessment after Redundancy Switch. In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR. European Conference on Synthetic Aperture Radar (EUSAR), 2021-03-29 - 2021-04-01, Leipzig, Germany. ISSN 2197-4403.

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After more than nine years of successful radar operations in space, a first major contingency passivated the TanDEM-X satellite's SAR instrument in July 2019. Subsequent investigations led to the decision to switch to the redundant instrument chain, i.e. using the redundant radio-frequency electronics for future radar operations. Here, we report results of the necessary re-assessment of the calibration of the instrument. The redundancy switch did not have a significant impact on the performance of the radar instrument. In particular, the radiometric accuracy remains excellent. The calibration factor differs by -0.9 dB in comparison to the previously operated nominal instrument chain

Item URL in elib:https://elib.dlr.de/130055/
Document Type:Conference or Workshop Item (Speech)
Title:TandDEM-X Calibration Assessment after Redundancy Switch
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Klenk, PatrickUNSPECIFIEDhttps://orcid.org/0000-0002-8284-2265UNSPECIFIED
Schmidt, KerstenUNSPECIFIEDhttps://orcid.org/0000-0001-7896-908XUNSPECIFIED
Kraus, ThomasUNSPECIFIEDhttps://orcid.org/0000-0002-9486-7371UNSPECIFIED
Steinbrecher, UlrichUNSPECIFIEDhttps://orcid.org/0000-0002-3704-3886UNSPECIFIED
Schwerdt, MarcoUNSPECIFIEDhttps://orcid.org/0000-0002-0045-3726UNSPECIFIED
Date:April 2021
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:SAR, synthetic-aperture radar, TerraSAR-X, TanDEM-X, contingency mitigation, calibration, absolute radiometric calibration, absolute calibration factor, redundancy, redundancy switch, antenna pattern, RCS, absolute RCS, Terra-SAR-X mission, internal calibration, external calibration, LTSM
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Leipzig, Germany
Event Type:international Conference
Event Dates:2021-03-29 - 2021-04-01
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - TSD/TDX Calibration and projekt support (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Klenk, Dr. Patrick
Deposited On:06 Nov 2019 16:39
Last Modified:29 Mar 2023 00:43

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