Measuring coseismic displacements with point-like targets offset tracking

Handle URI:
http://hdl.handle.net/10754/563298
Title:
Measuring coseismic displacements with point-like targets offset tracking
Authors:
Hu, Xie; Wang, Teng ( 0000-0003-3729-0139 ) ; Liao, Mingsheng
Abstract:
Offset tracking is an important complement to measure large ground displacements in both azimuth and range dimensions where synthetic aperture radar (SAR) interferometry is unfeasible. Subpixel offsets can be obtained by searching for the cross-correlation peak calculated from the match patches uniformly distributed on two SAR images. However, it has its limitations, including redundant computation and incorrect estimations on decorrelated patches. In this letter, we propose a simple strategy that performs offset tracking on detected point-like targets (PT). We first detect image patches within bright PT by using a sinc-like template from a single SAR image and then perform offset tracking on them to obtain the pixel shifts. Compared with the standard method, the application on the 2010 M 7.2 El Mayor-Cucapah earthquake shows that the proposed PT offset tracking can significantly increase the cross-correlation and thus result in both efficiency and reliability improvements. © 2013 IEEE.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Geoscience and Remote Sensing Letters
Issue Date:
Jan-2014
DOI:
10.1109/LGRS.2013.2256104
Type:
Article
ISSN:
1545598X
Sponsors:
Manuscript received August 17, 2012; revised February 25, 2013; accepted March 25, 2013. Date of publication June 11, 2013; date of current version November 8, 2013. This work was supported in part by the National Key Basic Research Program of China under Grant 2013CB733205, the National Natural Science Foundation of China under Grants 41271457 and 41021061, the National High Technology Research and Development Program of China under Grant 2011AA120404, and the Research Fund for the Doctoral Program of Higher Education of China under Grant 20110141110057.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorHu, Xieen
dc.contributor.authorWang, Tengen
dc.contributor.authorLiao, Mingshengen
dc.date.accessioned2015-08-03T11:45:09Zen
dc.date.available2015-08-03T11:45:09Zen
dc.date.issued2014-01en
dc.identifier.issn1545598Xen
dc.identifier.doi10.1109/LGRS.2013.2256104en
dc.identifier.urihttp://hdl.handle.net/10754/563298en
dc.description.abstractOffset tracking is an important complement to measure large ground displacements in both azimuth and range dimensions where synthetic aperture radar (SAR) interferometry is unfeasible. Subpixel offsets can be obtained by searching for the cross-correlation peak calculated from the match patches uniformly distributed on two SAR images. However, it has its limitations, including redundant computation and incorrect estimations on decorrelated patches. In this letter, we propose a simple strategy that performs offset tracking on detected point-like targets (PT). We first detect image patches within bright PT by using a sinc-like template from a single SAR image and then perform offset tracking on them to obtain the pixel shifts. Compared with the standard method, the application on the 2010 M 7.2 El Mayor-Cucapah earthquake shows that the proposed PT offset tracking can significantly increase the cross-correlation and thus result in both efficiency and reliability improvements. © 2013 IEEE.en
dc.description.sponsorshipManuscript received August 17, 2012; revised February 25, 2013; accepted March 25, 2013. Date of publication June 11, 2013; date of current version November 8, 2013. This work was supported in part by the National Key Basic Research Program of China under Grant 2013CB733205, the National Natural Science Foundation of China under Grants 41271457 and 41021061, the National High Technology Research and Development Program of China under Grant 2011AA120404, and the Research Fund for the Doctoral Program of Higher Education of China under Grant 20110141110057.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectOffset trackingen
dc.subjectpoint-like targetsen
dc.subjectsynthetic aperture radar interferometry (InSAR)en
dc.titleMeasuring coseismic displacements with point-like targets offset trackingen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEarth Science and Engineering Programen
dc.identifier.journalIEEE Geoscience and Remote Sensing Lettersen
dc.contributor.institutionState Key Laboratory of Information Engineering in Surveying, Mapping, and Remote Sensing, Wuhan University, Wuhan 430079, Chinaen
kaust.authorWang, Tengen
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