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An Interpretation Approach of Ascending–Descending SAR Data for Landslide Identification
Ren, Tianhe1; Gong, Wenping1; Gao, Liang2,3; Zhao, Fumeng1; Cheng, Zhan1
2022-03-07
Source PublicationRemote Sensing
ISSN2072-4292
Volume14Issue:5Pages:1299
Abstract

The technique of interferometric synthetic aperture radar (InSAR) is increasingly employed for landslide detection over large areas, even though the limitations of initial InSAR analysis results have been well acknowledged. Steep terrain in mountainous areas may cause geometric distortions of SAR images, which could affect the accuracy of InSAR analysis results. In addition, due to the existence of massive ground deformation points in the initial InSAR analysis results, accurate landslide recognition from the initial results is challenging. To efficiently identify potential landslide areas from the ascending–descending SAR datasets, this paper presents a novel interpretation approach to analyze the initial time-series InSAR analysis results. Within the context of the proposed approach, SAR visibility analysis, conversion analysis of deformation rates obtained from the timeseries InSAR analysis, and spatial analysis and statistics tools for cluster extraction are incorporated. The effectiveness of the proposed approach is illustrated through a case study of landslide identification in Danba, a county in Sichuan, China. The potential landslide regions in the study area are identified based on the interpretation of small baseline subset InSAR (SBAS-InSAR) results, obtained with ascending–descending Sentinel-1A datasets. Finally, on the basis of the field survey results, a total of 21 landslides are detected in the potential landslide regions identified, through which the results obtained from the proposed interpretation approach are tested.

KeywordAscending–descending Interpretation Landslide Identification Time-series Insar
DOI10.3390/rs14051299
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000769111200001
Scopus ID2-s2.0-85126285238
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Citation statistics
Document TypeJournal article
CollectionTHE STATE KEY LABORATORY OF INTERNET OF THINGS FOR SMART CITY (UNIVERSITY OF MACAU)
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorGong, Wenping
Affiliation1.Faculty of Engineering, China University of Geosciences, Wuhan, 430074, China
2.State Key Laboratory of Internet of Things for Smart City, Department of Civil and Environment Engineering, University of Macau, 999078, China
3.Center for Ocean Research in Hong Kong and Macau (CORE), 999077, China
Recommended Citation
GB/T 7714
Ren, Tianhe,Gong, Wenping,Gao, Liang,et al. An Interpretation Approach of Ascending–Descending SAR Data for Landslide Identification[J]. Remote Sensing, 2022, 14(5), 1299.
APA Ren, Tianhe., Gong, Wenping., Gao, Liang., Zhao, Fumeng., & Cheng, Zhan (2022). An Interpretation Approach of Ascending–Descending SAR Data for Landslide Identification. Remote Sensing, 14(5), 1299.
MLA Ren, Tianhe,et al."An Interpretation Approach of Ascending–Descending SAR Data for Landslide Identification".Remote Sensing 14.5(2022):1299.
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