PS基线网络用于线性工程形变监测与分析
发布时间：2019-07-20 21:40
【摘要】：针对SAR干涉点目标分析技术在区域地表形变监测中仅能在一定程度上消除大气延迟效应的问题,采用邻域差分的思想来减弱差分干涉相位中的自相关影响。采用附加距离限制的Delaunay三角网进行PS基线网络的布设,可以有效剔除距离较长的基线边和低质量的PS点目标,并利用邻接矩阵对PS基线网络中的重复边进行检测与删除,以提高程序的计算效率。首先利用模拟数据对程序的有效性与正确性进行验证,然后以大同-西安客运专线太谷-祁县段为研究对象,选取2015-07~2016-02的8景TerraSAR数据进行实例分析,获取的高铁沿线形变与已有地裂缝调查资料和野外实地考察资料具有较高的一致性,证明了PS基线网络在线性工程形变监测应用中的可行性。
[Abstract]:In order to solve the problem that SAR interference point target analysis technique can only eliminate the atmospheric delay effect in regional surface deformation monitoring to a certain extent, the idea of neighborhood difference is used to reduce the autocorrelation effect in differential interference phase. The Delaunay triangulation network with additional distance restriction can effectively eliminate the long distance baseline edge and low quality PS point target, and use the adjacent matrix to detect and delete the repeated edges in the PS baseline network in order to improve the computational efficiency of the program. Firstly, the validity and correctness of the program are verified by the simulation data. Then, taking the Taigu-Qixian section of Datong-Xi'an passenger dedicated line as the research object, the 8-scene TerraSAR data of 2015 / 07 / 2016 / 02 are selected for example analysis, and the obtained deformation along the high-speed railway is in good agreement with the existing ground fissures survey data and field investigation data, which proves the feasibility of the PS baseline network in the application of linear engineering deformation monitoring.
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本文编号：2516921
[Abstract]:In order to solve the problem that SAR interference point target analysis technique can only eliminate the atmospheric delay effect in regional surface deformation monitoring to a certain extent, the idea of neighborhood difference is used to reduce the autocorrelation effect in differential interference phase. The Delaunay triangulation network with additional distance restriction can effectively eliminate the long distance baseline edge and low quality PS point target, and use the adjacent matrix to detect and delete the repeated edges in the PS baseline network in order to improve the computational efficiency of the program. Firstly, the validity and correctness of the program are verified by the simulation data. Then, taking the Taigu-Qixian section of Datong-Xi'an passenger dedicated line as the research object, the 8-scene TerraSAR data of 2015 / 07 / 2016 / 02 are selected for example analysis, and the obtained deformation along the high-speed railway is in good agreement with the existing ground fissures survey data and field investigation data, which proves the feasibility of the PS baseline network in the application of linear engineering deformation monitoring.
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本文编号：2516921
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