利用高分辨率TerraSAR-X影像監(jiān)測唐山礦地面沉降
發(fā)布時間:2018-12-17 16:21
【摘要】:利用2012-12~2014-02獲取的13景高分辨率TerraSAR-X影像,采用PSI時序分析技術(shù)監(jiān)測唐山礦地面沉降。該技術(shù)以短時空基線為準(zhǔn)則生成47幅差分干涉圖,選擇強度穩(wěn)定性和頻譜相干性較高的相干目標(biāo)進行時間序列分析,基于最小二乘法獲取唐山礦區(qū)域相干目標(biāo)的地面下沉速率和沉降時間序列。結(jié)果表明,唐山礦有兩個地面沉降中心,分別位于礦區(qū)東北和西部方向,最大沉降速率達(dá)58.2mm/a;2013-06~09礦區(qū)出現(xiàn)回彈現(xiàn)象,而在其他時間段內(nèi)地面呈近似線性下沉。通過對比高程誤差改正前后的直方圖可以發(fā)現(xiàn),本文采用的兩次回歸分析方法對降低地形殘余誤差有很好的應(yīng)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.
【作者單位】: 中國礦業(yè)大學(xué)(北京)地球科學(xué)與測繪工程學(xué)院;中國國土資源航空物探遙感中心;
【基金】:國家自然科學(xué)基金(41504048) 高等學(xué)校博士學(xué)科點專項科研基金(20130023110001)~~
【分類號】:P642.26;TD325.4
本文編號:2384439
[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.
【作者單位】: 中國礦業(yè)大學(xué)(北京)地球科學(xué)與測繪工程學(xué)院;中國國土資源航空物探遙感中心;
【基金】:國家自然科學(xué)基金(41504048) 高等學(xué)校博士學(xué)科點專項科研基金(20130023110001)~~
【分類號】:P642.26;TD325.4
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