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Glacier motion estimation using SAR offset-tracking procedures

Strozzi, T., Luckman, A., Murray, T., Wegmuller, U. and Werner, C.L. (2002) Glacier motion estimation using SAR offset-tracking procedures. IEEE Transactions on Geoscience and Remote Sensing, 40 (11). pp. 2384-2391. ISSN 0196-2892

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Abstract

Two image-to-image patch offset techniques for estimating feature motion between satellite synthetic aperture radar (SAR) images are discussed. Intensity tracking, based on patch intensity cross-correlation optimization, and coherence tracking, based on patch coherence optimization, are used to estimate the movement of glacier surfaces between two SAR images in both slant-range and azimuth direction. The accuracy and application range of the two methods are examined in the case of the surge of Monacobreen in Northern Svalbard between 1992 and 1996. Offset-tracking procedures of SAR images are an alternative to differential SAR interferometry for the estimation of glacier motion when differential SAR interferometry is limited by loss of coherence, i.e., in the case of rapid and incoherent flow and of large acquisition time intervals between the two SAR images. In addition, an offset-tracking procedure in the azimuth direction may be combined with differential SAR interferometry in the slant-range direction in order to retrieve a two-dimensional displacement map when SAR data of only one orbit configuration are available.

Item Type: Article
Copyright, Publisher and Additional Information: Copyright © 2002 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.
Keywords: glacier-motion estimation, offset tracking, SAR, SAR interferometry, surge-type glacier
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds)
Depositing User: Sherpa Assistant
Date Deposited: 14 Oct 2005
Last Modified: 05 Jun 2014 09:57
Published Version: http://dx.doi.org/10.1109/TGRS.2002.805079
Status: Published
Refereed: Yes
Identification Number: 10.1109/TGRS.2002.805079
URI: http://eprints.whiterose.ac.uk/id/eprint/747

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