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Krieger, Gerhard and De Zan, Francesco and Bachmann, Markus and Hueso Gonzalez, Jaime and Rodriguez Cassola, Marc and Zink, Manfred (2012) Unexpected Height Offsets in TanDEM-X: Explanation and Correction. In: Proceedings of IEEE international Geoscience and Remote Sensing Symposium (IGARSS), pp. 1-4. IEEE. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2012-07-22 - 2012-07-27, Munich, Germany.
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Abstract
This paper reports on systematic height offsets that have been observed in TanDEM-X by evaluating a large number of digital elevation model (DEM) acquisitions. Besides the expected instrument and baseline offsets, which are compensated in the calibration chain, two unexpected external error sources have been identified that apply to any formation flying bistatic SAR interferometer. The first contribution is due to relativistic effects and can be well explained within Einstein’s special theory of relativity. The second effect is due to differential delays in the troposphere. It is shown that the theoretic predictions are in good agreement with the observed offsets. All necessary corrections have in the meantime been integrated in the operational TanDEM-X processing chain.
| Item URL in elib: | https://elib.dlr.de/76976/ | |||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | |||||||||||||||||||||
| Additional Information: | Copyright:(c) 2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. | |||||||||||||||||||||
| Title: | Unexpected Height Offsets in TanDEM-X: Explanation and Correction | |||||||||||||||||||||
| Authors: |
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| Date: | 26 July 2012 | |||||||||||||||||||||
| Journal or Publication Title: | Proceedings of IEEE international Geoscience and Remote Sensing Symposium (IGARSS) | |||||||||||||||||||||
| Refereed publication: | Yes | |||||||||||||||||||||
| Open Access: | Yes | |||||||||||||||||||||
| Gold Open Access: | No | |||||||||||||||||||||
| In SCOPUS: | No | |||||||||||||||||||||
| In ISI Web of Science: | No | |||||||||||||||||||||
| Page Range: | pp. 1-4 | |||||||||||||||||||||
| Publisher: | IEEE | |||||||||||||||||||||
| Status: | Published | |||||||||||||||||||||
| Keywords: | TanDEM-X, Interferoemtry, Relativity, Spacetime Interval, Differential Troposheric Delay, Calibration | |||||||||||||||||||||
| Event Title: | IEEE International Geoscience and Remote Sensing Symposium (IGARSS) | |||||||||||||||||||||
| Event Location: | Munich, Germany | |||||||||||||||||||||
| Event Type: | international Conference | |||||||||||||||||||||
| Event Dates: | 2012-07-22 - 2012-07-27 | |||||||||||||||||||||
| Organizer: | IEEE | |||||||||||||||||||||
| 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 - Vorhaben Technologie Experimente TSX und TDX (old) | |||||||||||||||||||||
| Location: | Oberpfaffenhofen | |||||||||||||||||||||
| Institutes and Institutions: | Microwaves and Radar Institute > Radar Concepts Microwaves and Radar Institute Microwaves and Radar Institute > Spaceborne SAR Systems Microwaves and Radar Institute > SAR Technology | |||||||||||||||||||||
| Deposited By: | Krieger, Dr.-Ing. Gerhard | |||||||||||||||||||||
| Deposited On: | 13 Aug 2012 10:48 | |||||||||||||||||||||
| Last Modified: | 31 Jul 2019 19:37 |
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