Monitoring of large and inconsistent deformation in coal mining area using point-like target offset tracking
Monitoring of large and inconsistent deformation in coal mining area using point-like target offset tracking
复制标题
利用点状目标偏移跟踪监测煤矿区大且不一致的变形
DOI：
10.1080/01431161.2021.2023230
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发表时间：
2022-02
影响因子：
3.4
通讯作者：
Wanli Liu
中科院分区：
文献类型：
--
作者：
Zhenguo Liu;Zhengfu Bian;Wanli Liu
西北煤矿区地表变形具有沉降量大、不均匀性强的特点。大的地面沉降给差分干涉合成孔径雷达（DInSAR）和永久散射体干涉（PSI）技术带来了巨大的挑战，因为在距离方向上，共配准后会产生像元级的偏移，甚至会直接导致人工角反射器（CR）的相干性完全丧失。偏移跟踪提供了捕获大变形的替代方案，尽管由于大变形梯度和使用固定的相关窗口大小，结果可能有偏差。本文将点状目标（PT）偏移量跟踪方法引入到煤矿区变形监测中，并采用逐级递减的相关窗口。对于参考SAR图像中的每个以PT为中心的SLC块，来自较大相关窗口的估计将用作较小相关窗口的指导，以在从属SAR图像中定位匹配SLC块，从而提供待估计的残余偏移保持为减小的块大小的一小部分的保证。利用单参考实时动态（RTK）GPS技术获得的34 CR的地面测量结果对偏移估计进行了评估，在距离和方位角方向上的RMS误差为1/13-1/14 SLC像素。
ABSTRACT Ground deformation in the coal mining area of Northwestern China is usually featured by large and inconsistent subsidence. Large subsidence brings great challenge to Differential Interferometric Synthetic Aperture Radar (DInSAR) and Permanent Scatterer Interferometry (PSI) technology due to the pixel-level offset in the range direction after co-registration, which could directly result in complete coherence loss even for the artificial Corner Reflectors (CRs). Offset tracking provides an alternative to capture the large deformation although the results could be biased due to the large deformation gradient and use of fixed correlation window size. In this paper, the point-like target (PT) offset tracking method is introduced to deformation monitoring in coal mining area with a levelly decreasing correlation window size. For each PT-centered SLC patch in the reference SAR image, the estimate from the larger correlation window will serve as a guide for the smaller one to locate the matching SLC patch in the slave SAR image, thus providing a guarantee that the residual offsets to be estimated remain to be a small fraction of the decreasing patch size. The offset estimates were evaluated by ground surveying results at 34 CRs obtained using single reference real-time kinematic (RTK) GPS technique, with a RMS error of 1/13-1/14 SLC pixel in both the range and azimuth directions.
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SAR像素偏移测量与采矿沉陷模型相结合揭示煤炭开采区三维时变大地表位移
影响因子：
13.5
作者：
Bingqian Chen;Zhenhong Li;Chen Yu;David Fairbairn;Jianrong Kang;Jinshan Hu;Liang Liang
通讯作者：
Liang Liang
影响因子：
2.3
作者：
Jilei Huang;K. Deng;H. Fan;Shiyong Yan
通讯作者：
Jilei Huang;K. Deng;H. Fan;Shiyong Yan
DOI：
10.3390/rs70709166
发表时间：
2015-07
期刊：
Remote. Sens.
影响因子：
--
作者：
H. Fan;X. Gao;Junkai Yang;K. Deng;Yang Yu
通讯作者：
H. Fan;X. Gao;Junkai Yang;K. Deng;Yang Yu
影响因子：
5.2
作者：
Michel, R;Avouac, JP;Taboury, J
通讯作者：
Taboury, J
DOI：
10.1109/tgrs.2002.805079
发表时间：
2002-11-01
影响因子：
8.2
作者：
Strozzi, T;Luckman, A;Werner, CL
通讯作者：
Werner, CL