测绘通报 ›› 2018, Vol. 0 ›› Issue (10): 102-106.doi: 10.13474/j.cnki.11-2246.2018.0325

• 技术交流 • 上一篇    下一篇

利用Sentinel-1影像探测宁波地面沉降

朱邦彦1, 李建成2, 储征伟1, 王晓3, 孙静雯1, 姚冯宇1   

  1. 1. 南京市测绘勘察研究院股份有限公司, 江苏 南京 210019;
    2. 武汉大学测绘学院, 湖北 武汉 430079;
    3. 淮海工学院测绘与海洋信息学院, 江苏 连云港 222000
  • 收稿日期:2018-02-02 修回日期:2018-03-27 出版日期:2018-10-25 发布日期:2018-10-31
  • 作者简介:朱邦彦(1986-),男,博士,研究方向为测量数据处理与InSAR时间序列分析。E-mail:byz@whu.edu.cn
  • 基金资助:
    国家973计划(2013CB733300);国家自然科学基金(41404028);淮海工学院青年基金(Z2017013);南京市测绘勘察研究院股份有限公司科研项目(2018RD01)

Ground Subsidence Monitoring Using Sentinel-1 Images in Ningbo City

ZHU Bangyan1, LI Jiancheng2, CHU Zhengwei1, WANG Xiao3, SUN Jingwen1, YAO Fengyu1   

  1. 1. Nanjing Insititute of Surveying, Mapping and Geotechnical Investigation Co., Ltd., Nanjing 210019, China;
    2. School of Geomatics and Geodesy, Wuhan University, Wuhan 430079, China;
    3. School of Geomatics and Marine Information, Huaihai Institute of Technology, Lianyungang 222000, China
  • Received:2018-02-02 Revised:2018-03-27 Online:2018-10-25 Published:2018-10-31

摘要: 基于21景Sentinel-1影像,采用MT-InSAR技术获取宁波地区2016-2018年的地表沉降信息,利用研究区同期水准数据进行精度评定,两者差值均小于3.0 mm/a,RMSE为1.7 mm/a,表明MT-InSAR方法反演结果与水准结果十分吻合。分析了宁波地区沉降时空特征,结果表明研究区沉降中心分布不集中且数量较多,其中最大沉降速率达22.5 mm/a,沉降量达30.3 mm,位于海曙区;主要交通公路、地铁和铁路均有部分落入沉降区内,并以地铁2号线为例,分析了轨道交通沿线地面沉降特征。

关键词: Sentinel-1, MT-InSAR, 宁波, 地面沉降, 轨道交通沿线

Abstract: MT-InSAR technique based on 21 Sentinel-1 images is used to research ground subsidence in Ningbo during the period of 2016-2018.The InSAR-derived results were validated by leveling surveys.The difference of displacement rates is less than 3.0 mm/a and RMSE is 1.7 mm/a.This shows that the results obtained by MT-InSAR technique agreed well with those measured by leveling.The spatiotemporal characterization of land subsidence in Ningbo is analyzed.The results show that the settlement centers in the study area are not concentrated and have a large number.The value of largest displacement rate is 22.5 mm/a with maximum settlement of 30.3 mm in Haishu.The main traffic roads,subways and railways are partly located in the subsidence area.Taking metro line 2 as an example,the characteristics of ground subsidence in Ningbo are analyzed along the rail transit.

Key words: Sentinel-1, MT-InSAR, Ningbo, ground subsidence, rail transit

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