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Evaluation of InSAR and TomoSAR for monitoring deformations caused by mining in a mountainous area with high resolution satellite-based SAR

Liu, Donglie; Shao, Yunfeng; Liu, Zhenguo; Riedel, Björn; Sowter, Andrew; Niemeier, Wolfgang; Bian, Zhengfu

Authors

Donglie Liu

Yunfeng Shao

Zhenguo Liu

Björn Riedel

Andrew Sowter andrew.sowter@nottingham.ac.uk

Wolfgang Niemeier

Zhengfu Bian

Abstract

Interferometric Synthetic Aperture Radar (InSAR) and Differential Interferometric Synthetic Aperture Radar (DInSAR) have shown numerous applications for subsidence monitoring. In the past 10 years, the Persistent Scatterer InSAR (PSI) and Small BAseline Subset (SBAS) approaches were developed to overcome the problem of decorrelation and atmospheric effects, which are common in interferograms. However, DInSAR or PSI applications in rural areas, especially in mountainous regions, can be extremely challenging. In this study we have employed a combined technique, i.e., SBAS-DInSAR, to a mountainous area that is severely affected by mining activities. In addition, L-band (ALOS) and C-band (ENVISAT) data sets, 21 TerraSAR-X images provided by German Aerospace Center (DLR) with a high resolution have been used. In order to evaluate the ability of TerraSAR-X for mining monitoring, we present a case study of TerraSAR-X SAR images for Subsidence Hazard Boundary (SHB) extraction. The resulting data analysis gives an initial evaluation of InSAR applications within a mountainous region where fast movements and big phase gradients are common. Moreover, the experiment of four-dimension (4-D) Tomography SAR (TomoSAR) for structure monitoring inside the mining area indicates a potential near all-wave monitoring, which is an extension of conventional InSAR.

Journal Article Type Article
Publication Date Feb 19, 2014
Journal Remote Sensing
Electronic ISSN 2072-4292
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 6
Issue 2
Institution Citation Liu, D., Shao, Y., Liu, Z., Riedel, B., Sowter, A., Niemeier, W., & Bian, Z. (2014). Evaluation of InSAR and TomoSAR for monitoring deformations caused by mining in a mountainous area with high resolution satellite-based SAR. Remote Sensing, 6(2), doi:10.3390/rs6021476
DOI https://doi.org/10.3390/rs6021476
Keywords Satellite-based SAR, InSAR, SBAS-DInSAR, 4-D TomoSAR, Phase gradient, Detectable deformation gradient, Coal mine
Publisher URL http://www.mdpi.com/2072-4292/6/2/1476
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0




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