Unexpected Height Offsets in TanDEM-X: Explanation and Correction
Krieger G, De Zan F, Bachmann M, Gonzalez JH, Cassola MR, Zink M (2012)
Publication Type: Conference contribution
Publication year: 2012
Publisher: IEEE
Edited Volumes: International Geoscience and Remote Sensing Symposium (IGARSS)
Pages Range: 1-4
Conference Proceedings Title: IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Event location: Munich
URI: https://elib.dlr.de/76976/
DOI: 10.1109/IGARSS.2012.6351579
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. © 2012 IEEE.
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APA:
Krieger, G., De Zan, F., Bachmann, M., Gonzalez, J.H., Cassola, M.R., & Zink, M. (2012). Unexpected Height Offsets in TanDEM-X: Explanation and Correction. In IEEE International Geoscience and Remote Sensing Symposium (IGARSS) (pp. 1-4). Munich, DE: IEEE.
MLA:
Krieger, Gerhard, et al. "Unexpected Height Offsets in TanDEM-X: Explanation and Correction." Proceedings of the 2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012, Munich IEEE, 2012. 1-4.
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