| Author: | Wang, Miao |
| Title: | Using ALOS PALSAR interferometry to monitor rapid mining subsidence over Fengfeng, Hebei, China |
| Advisors: | Zhang, Lei (LSGI) |
| Degree: | M.Sc. |
| Year: | 2017 |
| Subject: | Synthetic aperture radar Mine subsidences Coal mines and mining -- China -- Hebei Sheng Hong Kong Polytechnic University -- Dissertations |
| Department: | Faculty of Construction and Environment Department of Land Surveying and Geo-Informatics |
| Pages: | ix, 109 pages : color illustrations |
| Language: | English |
| Abstract: | This study is aimed at monitoring rapid mining subsidence by SAR Interferometry over Fengfeng, Hebei, China during 2007 to 2010. The area suffer from serious mining subsidence problems due to perennial underground mining. Therefore, how to effective monitor land subsidence becomes a major issue. Compared to leveling and GPS methods, SAR Interferometry provides better data coverage, and it is even a more efficient and economical method. Multi-temporal InSAR (MT-InSAR) techniques, involving the processing of multiple acquisitions in time, can be used to obtain large-area land displacement information with high accuracy. Temporarily Coherent Point SAR Interferometry (TCPInSAR) is one of MT-INSAR methods, which is a potential approach for detecting land subsidence in low coherence areas as it can identify and analysis coherent points between just two images and can acquire a reliable solution without conventional phase unwrapping. This technique can not only obtain large-scale surface deformation information, but also can avoid the phase ambiguity error because with the help of dense TCPs and TCP pairs, the estimation parameters becomes rather easy. In this study, TCPInSAR was applied with 12 ALOS PALSAR images from 2007 to 2010 to derive mining deformation in order to be used as an important reference for future mining subsidence control over Fengfeng. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 991022385850003411.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 7.01 MB | Adobe PDF | View/Open |
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