应用PSInSAR技术分析上海道路网沉降时空特性

发布时间：2018-12-15 14:45

【摘要】：城市道路网的持续稳定性监测不仅可以避免重大事故带来的人身财产损失,也有利于经济社会的可持续发展。针对道路网长距离、大跨度的实时监测需求,将永久散射体雷达干涉测量(persistent scatterer synthetic aperture radar interferometry,PSInSAR)技术引入城市道路网的形变监测和预警,处理了上海26景时间序列TerraSAR-X卫星数据,对道路网的沉降进行时空分析。空间上,首先阐述道路网整体的沉降格局,然后探讨局部路段的沉降细节及其驱动力;时间上,分析温度变化对路面沉降时间序列变化的影响,并对实验结果进行精度验证。结果表明,上海道路网沉降主要分布在浦东区,与路网密度相关,新区城市化发展建设已成为道路网主要的沉降原因;沥青路面的沉降时间序列与温度变化存在时间相关性,沉降结果与水准数据基本一致。
[Abstract]:The continuous stability monitoring of urban road network can not only avoid the loss of life and property caused by major accidents, but also benefit the sustainable development of economy and society. In order to meet the real-time monitoring requirement of long distance and large span of road network, the permanent scatterer radar interferometry (persistent scatterer synthetic aperture radar interferometry,PSInSAR) technique is introduced to the deformation monitoring and early warning of urban road network. The time series TerraSAR-X satellite data of Shanghai 26 scene are processed and the settlement of road network is analyzed in time and space. In space, the overall settlement pattern of road network is first expounded, then the settlement details and driving forces of local sections are discussed. In time, the influence of temperature change on the time series of pavement settlement is analyzed, and the accuracy of the experimental results is verified. The results show that the settlement of road network in Shanghai is mainly distributed in Pudong area, which is related to the density of road network. The development and construction of urbanization in the new area has become the main settlement reason of road network. The settlement time series of asphalt pavement has time correlation with temperature change, and the settlement result is basically consistent with the leveling data.
【作者单位】：武汉大学测绘遥感信息工程国家重点实验室;国土资源部地面沉降监测与防治重点实验室;上海地质调查研究院;
【基金】：国家自然科学基金(41571435,61331016) 高分辨率对地观测重大专项(06-Y30B04-9002-13/15)~~
【分类号】：U418

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