升降轨PSInSAR地面沉降监测结果的互检验与时序融合

发布时间：2018-03-25 04:31

本文选题：PSInSAR　切入点：视线向　出处：《国土资源遥感》2014年04期

【摘要】：升降轨PSInSAR时序分析获得的同一地区2组监测结果分别为升轨和降轨下的地表形变速率与累积变形量。针对研究区地面以下沉为主,水平方向变形极为微小的特点,将视线向(line of sight,LOS)变形转换为垂向的下沉值,以此进行升降轨模式下2组观测值的比较与精度检验。在此基础上,将相干目标的2组观测序列数据融合以实现加密观测。研究结果表明:升降轨模式下沉降速率观测值的互检验精度优于2 mm;2组观测序列数据的融合结果进一步揭示了相干目标在时域上的非线性沉降特征。
[Abstract]:The two groups of monitoring results obtained by PSInSAR time series analysis for the same area are the rate of ground deformation and the cumulative deformation under the rising and falling rails, respectively. In view of the characteristics of the subsidence of the ground in the study area, the horizontal deformation is extremely small. The line of sight (Los) deformation is converted into the vertical subsidence value, and the comparison and accuracy test of the two groups of observation values in the mode of lifting and lowering orbit are carried out. Two groups of observation sequence data of coherent target are fused to realize the intensive observation. The results show that the accuracy of the observation value of subsidence rate is better than that of two groups of observation sequence data in the mode of landing and landing orbit. The nonlinear subsidence characteristics of coherent targets in time domain are shown.
【作者单位】：中国国土资源航空物探遥感中心;
【基金】：中国国土资源航空物探遥感中心对地观测技术工程实验室青年创新基金项目(编号:2010YFL11) 国家高技术“863”计划项目(编号:2007AA12Z171) 中国地质调查局计划项目(编号:1212010814041,1212010641204)共同资助
【分类号】：TN957.52

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