| DEM对PS-InSAR地面沉降监测的影响 |
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| 引用本文： | 李映辰,柯樱海,宫辉力,李小娟,陈蓓蓓.DEM对PS-InSAR地面沉降监测的影响[J].测绘科学,2018(1):124-134. |
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| 作者姓名： | 李映辰 柯樱海 宫辉力 李小娟 陈蓓蓓 |
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| 作者单位： | 首都师范大学三维信息获取与应用教育部重点实验室,北京 100048;首都师范大学城市环境过程与数字模拟国家重点实验室培育基地,北京 100048;国家测绘地理信息局地图技术审查中心,北京 100830
首都师范大学三维信息获取与应用教育部重点实验室,北京 100048;首都师范大学城市环境过程与数字模拟国家重点实验室培育基地,北京 100048 |
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| 摘 要： | 针对PS-InSAR监测地面沉降受DEM精度影响的问题,该文通过应用SRTM-3DEM、ASTER GDEM和Pleiades立体像对来获取DEM,分析对比3种DEM的高程精度及其参与PS-InSAR流程的沉降监测精度。结果表明,Pleiades DEM在建筑密集区和高架桥区的监测精度更高,SRTM-3DEM在居民地和施工地区沉降监测精度更高。该成果为不同区域PS-InSAR沉降监测的DEM选择提供了参考。
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| 关 键 词： | 地面沉降 PS-InSAR Pleiades DEM 立体像对 ground subsidence PS-InSAR Pleiades DEM stereo-pair |
Influence of DEM on ground subsidence monitoring of PS-InSAR |
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| LI Yingchen,KE Yinghai,GONG Huili,LI Xiaojuan,CHEN Beibei.Influence of DEM on ground subsidence monitoring of PS-InSAR[J].Science of Surveying and Mapping,2018(1):124-134. |
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| Authors: | LI Yingchen KE Yinghai GONG Huili LI Xiaojuan CHEN Beibei |
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| Abstract: | According to the fact that ground subsidence monitoring by the PS-InSAR system is sensitive to DEM precision,this paper uses SRTM-3 DEM、ASTER GDEM and Pleiades stereo image pairs to obtain DEM.This research analyzes the elevation accuracy of three DEM and the settlement monitoring precision involved in the PS-InSAR process.The results show that the monitoring accuracy of Pleiades DEM is higher in built-up area and viaduct area,and srtm-3 DEM is more accurate in residential and construction area settlement monitoring.The results provide a reference for the DEM selection of PS-InSAR settlement monitoring in different regions. |
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