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http://dx.doi.org/10.12814/jkgss.2022.21.4.055

Ground Settlement Monitoring using SAR Satellite Images  

Chungsik, Yoo (School of Civil, Architectural Engineering and Landscape Architecture, Sungkyunkwan Univ. Natural Sciences Campus)
Publication Information
Journal of the Korean Geosynthetics Society / v.21, no.4, 2022 , pp. 55-67 More about this Journal
Abstract
In this paper, fundamentals and recent development of the interferometric synthetic aperture radar, known as InSAR, technique for measuring ground deformation through satellite image analysis are presented together with case histories illustrating its applicability to urban ground deformation monitoring. A study area in Korea was selected and processed based on the muti-temporal time series InSAR analysis, namely SBAS (Small Baseline Subset)-InSAR and PS (Persistent Scatterers)-InSAR using Sentinel-1A SAR images acquired from the year 2014 onward available from European Space Agency Copernicus Program. The ground settlement of the study area for the temporal window of 2014-2022 was evaluated from the viewpoint of the applicability of the InSAR technique for urban infrastructure settlement monitoring. The results indicated that the InSAR technique can reasonably monitor long-term settlement of the study area in millimetric scale, and that the time series InSAR technique can effectively measure ground settlement that occurs over a long period of time as the SAR satellite provides images of the Korean Peninsula at regular time intervals while orbiting the earth. It is expected that the InSAR technique based on higher resolution SAR images with small temporal baseline can be a viable alternative to the traditional ground borne monitoring method for ground deformation monitoring in the 4th industrial era.
Keywords
Ground settlement; Monitoring; SAR satellite; InSAR; SBAS-InSAR; PS-InSAR;
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Times Cited By KSCI : 6  (Citation Analysis)
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