基于永久散射体合成孔径雷达干涉测量技术的地面沉降监测  

Monitoring of Land Subsidence Based on PSInSAR Technology

作　　者：范军 陈筠力[2] 李相东 路瑞峰[1] 侯雨生[1] 刘艳阳[1] FAN Jun;CHEN Junli;LI Xiangdong;LU Ruifeng;HOU Yusheng;LIU Yanyang(Shanghai Institute of Satellite Engineering,Shanghai 201109,China;Shanghai Academy of Spaceflight Technology,Shanghai 201109,China)

机构地区：[1]上海卫星工程研究所,上海201109 [2]上海航天技术研究院,上海201109

出　　处：《上海航天（中英文）》2023年第2期118-125,共8页Aerospace Shanghai（Chinese&English）

基　　金：国家自然科学基金(62171272)。

摘　　要：城市施工建设及地下水开采活动日益频繁,导致城市地面沉降问题日益严重。虽然传统地面沉降监测技术的精度较高,但成本也高。近年来,星载合成孔径雷达干涉测量(InSAR)技术发展起来,已被用于监测大范围地表形变,具有低成本、大面积、高精度等特点。首次采用永久散射体合成孔径雷达干涉测量(PSInSAR)技术,监测上海西南某区域2017—2021年间的地面沉降。结果显示:除一处楼房外,该区域大部分地区未发生沉降,最大沉降速率约−7.10 mm/a,最大沉降量约25.43 mm。采用该技术监测沉降,一方面节省了大量的人力和物力;另一方面,本研究成果对城市地表沉降的科学防治具有重要的参考意义。With the increasing frequency of urban construction and groundwater exploitation,the problem of urban land subsidence is becoming more and more serious.The accuracy of the traditional ground subsidence monitoring technology is high,but the cost is also high.Spaceborne synthetic aperture radar interferometry(InSAR)is a new technique developed recently for monitoring large-scale surface deformation.It has the characteristics such as low cost,large area,and high precision.In this paper,the PSInSAR technology is used for the first time to monitor the land subsidence in a certain area in the southwest of Shanghai from 2017 to 2021.The results show that there is no subsidence in most regions in area,except for one building.The maximum settlement rate is about−7.10 mm/a,and the maximum settlement is about 25.43 mm.The PSInSAR technology can save a lot of manpower and material resources,and the obtained results in this paper have important reference significance for the scientific prevention and control of urban land subsidence.

关 键 词：星载合成孔径雷达(SAR) 永久散射体合成孔径雷达干涉测量(PSInSAR) 沉降监测 科学防治 时间序列分析 

分 类 号：P237[天文地球—摄影测量与遥感]