Improved SAR Amplitude Image Offset Measurements for Deriving Three-Dimensional Coseismic Displacements

Handle URI:
http://hdl.handle.net/10754/556250
Title:
Improved SAR Amplitude Image Offset Measurements for Deriving Three-Dimensional Coseismic Displacements
Authors:
Wang, Teng ( 0000-0003-3729-0139 ) ; Jonsson, Sigurjon ( 0000-0001-5378-7079 )
Abstract:
Offsets of synthetic aperture radar (SAR) images have played an important role in deriving complete three-dimensional (3-D) surface displacement fields in geoscientific applications. However, offset maps often suffer from multiple outliers and patch-like artifacts, because the standard offset-measurement method is a regular moving-window operation that does not consider the scattering characteristics of the ground. Here, we show that by focusing the offset measurements on predetected strong reflectors, the reliability and accuracy of SAR offsets can be significantly improved. Application to the 2011 Van (Turkey) earthquake reveals a clear deformation signal from an otherwise decorrelated interferogram, making derivation of the 3-D coseismic displacement field possible. Our proposed method can improve mapping of coseismic deformation and other ground displacements, such as glacier flow and landslide movement when strong reflectors exist.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Improved SAR Amplitude Image Offset Measurements for Deriving Three-Dimensional Coseismic Displacements 2015:1 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Issue Date:
3-Feb-2015
DOI:
10.1109/JSTARS.2014.2387865
Type:
Article
ISSN:
1939-1404; 2151-1535
Additional Links:
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7029598
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorWang, Tengen
dc.contributor.authorJonsson, Sigurjonen
dc.date.accessioned2015-06-04T11:06:01Zen
dc.date.available2015-06-04T11:06:01Zen
dc.date.issued2015-02-03en
dc.identifier.citationImproved SAR Amplitude Image Offset Measurements for Deriving Three-Dimensional Coseismic Displacements 2015:1 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensingen
dc.identifier.issn1939-1404en
dc.identifier.issn2151-1535en
dc.identifier.doi10.1109/JSTARS.2014.2387865en
dc.identifier.urihttp://hdl.handle.net/10754/556250en
dc.description.abstractOffsets of synthetic aperture radar (SAR) images have played an important role in deriving complete three-dimensional (3-D) surface displacement fields in geoscientific applications. However, offset maps often suffer from multiple outliers and patch-like artifacts, because the standard offset-measurement method is a regular moving-window operation that does not consider the scattering characteristics of the ground. Here, we show that by focusing the offset measurements on predetected strong reflectors, the reliability and accuracy of SAR offsets can be significantly improved. Application to the 2011 Van (Turkey) earthquake reveals a clear deformation signal from an otherwise decorrelated interferogram, making derivation of the 3-D coseismic displacement field possible. Our proposed method can improve mapping of coseismic deformation and other ground displacements, such as glacier flow and landslide movement when strong reflectors exist.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7029598en
dc.rights(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.en
dc.subjectPixel offsetsen
dc.subjectsynthetic aperture radar (SAR)en
dc.subjectthree-dimensional (3-D) displacementen
dc.titleImproved SAR Amplitude Image Offset Measurements for Deriving Three-Dimensional Coseismic Displacementsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensingen
dc.eprint.versionPost-printen
kaust.authorWang, Tengen
kaust.authorJonsson, Sigurjonen
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