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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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Abstract
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/ | ||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||
| Title: | TandDEM-X Calibration Assessment after Redundancy Switch | ||||||||||||||||||||||||
| Authors: |
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| 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 SCOPUS: | Yes | ||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||
| ISSN: | 2197-4403 | ||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||
| 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 | ||||||||||||||||||||||||
| Organizer: | VDE | ||||||||||||||||||||||||
| 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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