StaMPS-MTI技术在地面沉降监测中的应用

发布时间：2018-04-27 12:01

本文选题：永久散射体法 + 短基线集法　；参考：《西南交通大学学报》2017年02期

【摘要】：为了提高监测技术的空间采样率,基于永久散射体法(permanent scatters,PS)和短基线集法(small baseline subsets,SBAS)技术,同时考虑PS点、慢失相关滤波相位(slowly-decorrelationg filtered phase,SDFP)点的相位和幅度稳定性,对满足给定阈值的点相位进行加权平均,优化选取斯坦福永久散射体-多时相InSAR(stanford method for persistent scatterers-multi-temporal InSAR,StaMPS-MTI)技术的高相干点集.并使用SBAS技术的形变模型提取研究区的沉降量和沉降速率.在此基础上,分别利用PS、SBAS及StaMPS-MTI技术对北京市局部地区2007~2010年的29景ENVISAT ASAR数据进行处理,提取研究区2007~2010年的时序沉降情况及年平均沉降速率,对沉降结果进行了详细的对比和系统分析.理论研究和真实SAR数据实验结果均表明,StaMPS-MTI技术获取了404 276个高相干点,空间采样率相较于PS技术提高了62.3%,相较于SBAS技术增加了129.4%,保证了监测结果的精度和可靠性.
[Abstract]:In order to improve the spatial sampling rate of the monitoring technique, based on the permanent scatters method and the short baseline set method small baseline subsets, the phase and amplitude stability of PS points and slowly-uncorrelated filtering phase slowly-decorationg filtered phases are considered. The weighted average of the point phase satisfying the given threshold is used to optimize the selection of the high coherent point set of the Stanford permanent scattering-multitemporal InSAR(stanford method for persistent scatterers-multi-temporal Insarn StaMPS-MTI (StaMPS-MTI) technique. The deformation model of SBAS technique is used to extract the settlement and settlement rate of the study area. On this basis, 29 ENVISAT ASAR data from 2007 to 2010 were processed by PSS-SBAS and StaMPS-MTI technology respectively, and the time series subsidence and annual average settlement rate were extracted from 2007 to 2010 in the study area. The settlement results are compared and systematically analyzed in detail. Theoretical research and real SAR data experiments show that StaMPS-MTI has acquired 404,276 highly coherent points, and the spatial sampling rate is 62.3% higher than that of PS, and 129.4% higher than that of SBAS, which ensures the accuracy and reliability of the monitoring results.
【作者单位】：山东科技大学测绘科学与工程学院;青岛农业大学理学与信息科学学院;
【基金】：国家自然科学基金资助项目(41274007,41404003) 山东省自然科学基金资助项目(ZR2012DM001) 山东省泰山学者建设工程专项经费资助项目(TSXZ201509)
【分类号】：P237;P642.26

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