基于单轨道OT DInSAR的矿山时序三维多量级形变重建

提出一种矿山地表时序三维多量级形变重建方法。首先利用单轨道OT和DInSAR技术提取LOS向非连续的多量级形变；再结合形变先验融合模型和概率积分法构建矿山三维多量级形变重建模型；最后以神东大柳塔矿山52303工作面为研究对象，对覆盖研究区的6对高分辨率TerraSAR-X数据进行时序处理，获取长时间序列的矿山地表三维多量级形变监测结果。与水准测量结果对比发现，该方法与水准测量结果形变趋势一致，垂直向、东西向和南北向的均方根误差（RMSE）分别小于0.188 0 m、0.224 3 m和0.207 4 m。该方法不仅能准确测量矿山地表三维多量级形变，还能精细反演矿山地表沉降漏斗边缘到中心的形变特征。

Reconstruction of Time Series Three-Dimensional Multi-Level Deformation in Mining Area Based on Single OT DInSAR Pair

We propose a reconstruction method of three-dimensional (3D) multi-level deformation in time series. Firstly, OT DInSAR are applied to retrieve the discontinuous multi-level deformation in LOS direction. Then, the deformation prior fusion model and probability integration method are integrated to build the reconstruction model of three-dimensional multi-level deformation in mining areas. Finally, the 52303 workface in Daliuta coal area is selected as the research object to verify the feasibility and precision of the proposed method. After processing six high-resolution TerraSAR-X image pairs, we acquire the results of time series three-dimensional multi-level deformation for this workface. The monitoring results by our proposed method are consistent with the leveling results. The root-mean-square errors (RMSE) in the vertical, east-west and north-south directions are less than 0.188 0 m, 0.224 3 m and 0.207 4 m, respectively. Therefore, the proposed method can not only accurately measure the three-dimensional mining deformation, but also accurately retrieve the three-dimensional multi-level deformation characteristics with more details from the edge to the center of the subsidence basin.