An Alternative Method for Estimating 3-D Large Displacements of Mining Areas from a Single SAR Amplitude Pair Using Offset Tracking
An Alternative Method for Estimating 3-D Large Displacements of Mining Areas from a Single SAR Amplitude Pair Using Offset Tracking
复制标题
使用偏移跟踪从单个 SAR 幅度对估计采矿区域 3-D 大位移的替代方法
DOI：
10.1109/tgrs.2018.2803285
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发表时间：
2018-02
影响因子：
8.2
通讯作者：
Markus Papst
中科院分区：
文献类型：
--
作者：
Zefa Yang;Zhiwei Li;Jianjun Zhu;Axel Preusse;Jun Hu;Guangcai Feng;Huiwei Yi;Markus Papst
测量三维开采引起的位移对于了解采矿变形机制和评估与采矿有关的地质灾害是必不可少的。在我们以前的工作中，我们提出了一种利用合成孔径雷达(SAR)的单幅值对(SAP)沿雷达视线(LOS)方向的地表变形来估计三维采矿引起的大位移的方法(以下简称OT-SAP)。OT-SAP方法有效地降低了以往基于OT的三维挖掘位移反演方法对SAR数据的严格要求。然而，由于缺乏冗余观测，OT-SAP对视距变形中的误差不是很健壮。在本文中，我们提出了一种替代OT-SAP的方法(以下称为AOT-SAP)。AOT-SAP方法利用合成孔径雷达SAP沿视轴和方位向的二维形变观测值来估计三维采矿引起的大位移，而不是仅利用OT-SAP方法中的视轴形变来估计。因此，与以前的OT-SAP方法相比，AOT-SAP方法包含了更多的冗余观测。理论分析和基于模拟数据集和真实数据集的实验表明，与OT-SAP估计的三维位移相比，AOT-SAP可以有效地提高估计三维位移的精度。
Measuring 3-D mining-induced displacements is essential to understand mining deformation mechanisms and assess mining-related geohazards. In our previous work, we proposed a method for estimating 3-D mining-induced large displacements with the surface deformation along the radar line-of-sight (LOS) direction derived from a single amplitude pair (SAP) of synthetic aperture radar (SAR) using the offset tracking (OT) procedure (hereafter referred to as OT-SAP). The OT-SAP method effectively reduces the strict requirements on SAR data of the previous OT-based methods for 3-D mining-induced displacement retrieval. However, OT-SAP is not robust to errors in the LOS deformation, due to the lack of redundant observations. In this paper, we present an alternative approach (hereafter called AOT-SAP) to OT-SAP. The AOT-SAP method involves estimating the 3-D mining-induced large displacements with OT-derived 2-D deformation observations along the LOS and azimuth directions from an SAP of SAR, instead of just the LOS deformation in the OT-SAP method. Consequently, more redundant observations are incorporated in the AOT-SAP method compared with the previous OT-SAP method. The theoretical analysis and experiments based on both simulated and real data sets suggest that AOT-SAP can effectively improve the accuracies of the estimated 3-D displacements compared with the OT-SAP-estimated ones.
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影响因子：
7.4
作者：
A. Ghose
通讯作者：
A. Ghose
影响因子：
--
作者：
Zhong Lu;D. Dzurisin
通讯作者：
Zhong Lu;D. Dzurisin
影响因子：
3.4
作者：
Michel, R;Rignot, E
通讯作者：
Rignot, E
影响因子：
2
作者：
Carnec, C;Delacourt, C
通讯作者：
Delacourt, C
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