利用高分辨率TerraSAR-X影像监测唐山矿地面沉降

发布时间：2018-12-17 16:21

【摘要】：利用2012-12~2014-02获取的13景高分辨率TerraSAR-X影像,采用PSI时序分析技术监测唐山矿地面沉降。该技术以短时空基线为准则生成47幅差分干涉图,选择强度稳定性和频谱相干性较高的相干目标进行时间序列分析,基于最小二乘法获取唐山矿区域相干目标的地面下沉速率和沉降时间序列。结果表明,唐山矿有两个地面沉降中心,分别位于矿区东北和西部方向,最大沉降速率达58.2mm/a;2013-06~09矿区出现回弹现象,而在其他时间段内地面呈近似线性下沉。通过对比高程误差改正前后的直方图可以发现,本文采用的两次回归分析方法对降低地形残余误差有很好的应用效果。
[Abstract]:The 13 high resolution TerraSAR-X images obtained from 2012-12 and 2014-02 were used to monitor the ground subsidence of Tangshan Mine by using PSI time series analysis technique. The technique uses short space-time baseline as the criterion to generate 47 differential interferograms and selects coherent targets with high intensity stability and spectral coherence for time series analysis. Based on the least square method, the subsidence rate and subsidence time series of coherent targets in Tangshan mine area are obtained. The results show that there are two ground subsidence centers in Tangshan Mine, which are located in the northeast and west of the mining area, respectively. The maximum subsidence rate is 58.2 mm / a and the springback appears in 2013-0609 mining area, but the ground subsidence is approximately linear in other time periods. By comparing the histogram before and after the correction of elevation error, it can be found that the method of twice regression analysis adopted in this paper has a good application effect in reducing the residual error of terrain.
【作者单位】：中国矿业大学(北京)地球科学与测绘工程学院;中国国土资源航空物探遥感中心;
【基金】：国家自然科学基金(41504048) 高等学校博士学科点专项科研基金(20130023110001)~~
【分类号】：P642.26;TD325.4

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