基于PS-InSAR技术获取2021年天津市中心城区地表沉降量及精度验证  

Obtaining Surface Subsidence and Accuracy Verification in the Central Urban Area of Tianjin in 2021 Based on PS-InSAR Technology

作　　者：王洪友 杨红磊[2] 干龙祥 刘子潇[1] 陈香[1] WANG Hongyou;YANG Honglei;GAN Longxiang;LIU Zixiao;CHEN Xiang(Tianjin Institute of Surveying and Mapping Co.,Ltd.,Tianjin 300381,China;School of Land Science and Technology,China University of Geosciences,Beijing 100083,China)

机构地区：[1]天津市测绘院有限公司,天津300381 [2]中国地质大学(北京)土地科学技术学院,北京100083

出　　处：《城市勘测》2025年第1期175-178,共3页Urban Geotechnical Investigation & Surveying

摘　　要：为研究2021年天津市中心城区地表沉降原因和特征,采用PS-InSAR技术,通过处理两轨30景TerraSAR-X高分辨率数据,获得了中心城区地表沉降量,并使用RaderSAT-2同期数据及一二等水准数据分别开展内符合度评价和外符合度评价工作。结果表明,天津市外环内地表相对稳定,中心城区西南部地表沉降较为严重,其次为中心城区南部及东部,中心城区北部略有抬升。To study the causes and characteristics of surface subsidence in the Central City of Tianjin in 2021,PS-InSAR technology was used to obtain the surface subsidence amount of the central urban area by processing 30 high-resolution TerraSAR-X data from two tracks.RaderSAT-2 data at the same period and the first and second level data were used to carry out the internal conformity evaluation and external conformity evaluation.The results indicate that the surface inside the outer ring of Tianjin is relatively stable,but the southwest part of the central urban area has experiencd the more severe surface subsidence,followed by the southern and eastern parts of the central urban area,and the northern part of the central urban area has experiencd slight uplift.

关 键 词：永久散射体合成孔径雷达干涉测量技术 沉降 精度验证 

分 类 号：P237[天文地球—摄影测量与遥感]