Prats, Pau and Scheiber, Rolf and Reigber, Andreas and Andres, Christian and Horn, Ralf (2009) Estimation of the Surface Velocity Field of the Aletsch Glacier Using Multi-Baseline Airborne SAR Interferometry. IEEE Transactions on Geoscience and Remote Sensing, 47 (2), pp. 419-430. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/TGRS.2008.2004277.
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Abstract
This paper presents a methodology to process airborne interferometric SAR data to measure surface velocity fields of temperate glaciers, and applies it to data acquired over the Aletsch glacier. The first part of the paper deals with the main limitation in airborne interferometric SAR to retrieve reliable interferometric products, namely the existence of the so-called residual motion errors: inaccuracies in the order of a few centimeters in the navigation system. An extended multi-squint approach is proposed for their estimation in the case of non-stationary scenes. The second part of the paper expounds an efficient methodology to derive surface velocity fields with airborne systems, where the line-of-sight displacement is estimated using differential interferometry, and the along-track component by estimating the azimuth coregistration offsets. The necessary steps to finally obtain the 3D surface velocity field are also presented, as well as the possibility to combine different acquisition geometries. Airborne interferometric SAR data acquired by the Experimental SAR system of DLR over the Aletsch glacier, located in the Swiss Alps, are used to evaluate the performance of the proposed approach. The motion of the corner reflectors deployed in the scene is retrieved with an accuracy between 1-5 cm/day using L-band data.
Item URL in elib: | https://elib.dlr.de/54928/ | ||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||
Additional Information: | �©2009 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: | Estimation of the Surface Velocity Field of the Aletsch Glacier Using Multi-Baseline Airborne SAR Interferometry | ||||||||||||||||||||||||
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Date: | February 2009 | ||||||||||||||||||||||||
Journal or Publication Title: | IEEE Transactions on Geoscience and Remote Sensing | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||
Volume: | 47 | ||||||||||||||||||||||||
DOI: | 10.1109/TGRS.2008.2004277 | ||||||||||||||||||||||||
Page Range: | pp. 419-430 | ||||||||||||||||||||||||
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Publisher: | IEEE - Institute of Electrical and Electronics Engineers | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | cryosphere, differential SAR interferometry (DInSAR), synthetic aperture radar (SAR), SAR interferometry, | ||||||||||||||||||||||||
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 Flugzeug-SAR (old) | ||||||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||||||
Institutes and Institutions: | Microwaves and Radar Institute Microwaves and Radar Institute > SAR Technology | ||||||||||||||||||||||||
Deposited By: | Prats, Dr. Pau | ||||||||||||||||||||||||
Deposited On: | 23 Mar 2009 | ||||||||||||||||||||||||
Last Modified: | 31 Jul 2019 19:22 |
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