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

Liu, Donglie and Shao, Yunfeng and Liu, Zhenguo and Riedel, Björn and Sowter, Andrew and Niemeier, Wolfgang and Bian, Zhengfu (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). pp. 1476-1495. ISSN 2072-4292

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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.

Item Type: Article
Keywords: Satellite-based SAR, InSAR, SBAS-DInSAR, 4-D TomoSAR, Phase gradient, Detectable deformation gradient, Coal mine
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering
Identification Number: https://doi.org/10.3390/rs6021476
Depositing User: Wahid, Ms. Haleema
Date Deposited: 29 Apr 2014 10:07
Last Modified: 14 Sep 2016 08:08
URI: http://eprints.nottingham.ac.uk/id/eprint/3048

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