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政大典藏 > College of Social Science > Department of Land Economics > Periodical Articles > Item 140.119/120859

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/120859

Title:	Error-Regulated Multi-Pass DInSAR Analysis for Landslide Risk Assessment
Authors:	Kim, Jung Rack Yun, HyeWon Van Gasselt, Stephan 范噶色 Choi, YunSoo
Contributors:	地政系
Date:	2018-04
Issue Date:	2018-11-09 15:03:48 (UTC+8)
Abstract:	Landslide risk assessment based on Differential Interferometric SAR analyses (DInSAR) is associated with a number of error effects. We here approach the problem of assessing landslide risks over mountainous areas, where DInSAR observations are often influenced by orographic effects and inaccurate base topographies by employing a dedicated error compensation. In order to obtain accurate information on surface deformation, we apply corrections for DInSAR interferograms using high-resolution base topography and water vapor information obtained from a satellite radiometer. We observe that the corrected DInSAR output is in accordance with the environmental context as inferred by geological and geomorphological settings. It is feasible to better quantify landslide monitoring schemes whenever high- accuracy atmospheric error maps and a methodology to effectively compensate for external errors in DInSAR interferograms are available. The approach in this study can be further upgraded for future SAR- based assessments and various error correction approaches for even more precise landslide risk assessments.
Relation:	PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING, 84(4), 189-202
Data Type:	article
DOI link:	http://dx.doi.org/10.14358/PERS.84.4.189
DOI:	10.14358/PERS.84.4.189
Appears in Collections:	[Department of Land Economics] Periodical Articles

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