测绘通报 ›› 2018, Vol. 0 ›› Issue (6): 55-60.doi: 10.13474/j.cnki.11-2246.2018.0176

• 学术研究 • 上一篇    下一篇

星载InSAR技术支持下的昆明地表沉降监测

麻源源1, 陈云波2, 左小清1, 麻卫峰3, 吴文豪4   

  1. 1. 昆明理工大学国土资源工程学院, 云南 昆明 650093;
    2. 昆明市规划编制与信息中心, 云南 昆明 650500;
    3. 云南师范大学旅游与地理科学学院, 云南 昆明 650000;
    4. 湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室, 湖南 湘潭 411201
  • 收稿日期:2017-10-20 修回日期:2017-12-20 出版日期:2018-06-25 发布日期:2018-07-07
  • 作者简介:麻源源(1990-),男,硕士生,主要研究方向为SAR遥感信息处理与提取。E-mail:mabaofeng200888@qq.com

Ground Surface Settlement Monitoring by Spaceborne InSAR Technology in Kunming

MA Yuanyuan1, CHEN Yunbo2, ZUO Xiaoqing1, MA Weifeng3, WU Wenhao4   

  1. 1. Kunming University of Science and Engineering College of Land and Resources, Kunming 650093, China;
    2. Kunming Municipal Planning and Information Centre, Kunming 650500, China;
    3. Yunnan Normal University School of Tourism and Geography Science, Kunming 650000, China;
    4. Hunan Province Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection, Hunan University of Science and Technology, Xiangtan 411201, China
  • Received:2017-10-20 Revised:2017-12-20 Online:2018-06-25 Published:2018-07-07

摘要: 为了分析在2014-2017年期间昆明城区地面形变情况,本文利用Sentinel-1A数据,基于SBAS-InSAR技术提取了昆明城区升降轨模式下形变信息。首先,将雷达视线向(LOS)上的形变速率转换为垂向方向的沉降速率,再通过对升降轨观测数据相互验证和融合处理避免单一模式下的数据失真,反演出更加真实的城区地表沉降,并与城区历史沉降监测数据进行对比分析。结果表明:近3年期间昆明五华区沉降缓慢,相对稳定;西山区和官渡区内的滇池北岸区域呈现大面积沉降且沉降速率较快的趋势,形成多个沉降漏斗中心,最大沉降垂直速率达-54.2 mm/a。

关键词: Sentinel-1, 小基线集, 升降轨, 数据相互验证, 数据融合

Abstract: In order to analyze the land subsidence in Kunming city in the period from 2014 to 2017,based on Sentinel-1 data,This paper uses SBAS-InSAR to extract ascending and descending rail mode of deformation information in Kunming city.First line of sight (LOS) converts the deformation rate on the vertical direction of the sedimentation rate.Through the ascending and descending mutual authentication and processing of observation data. it can avoid distortion of the single mode of data,inverse real land settlement,and compare with the urban historical settlement monitoring data analysis.The results show that in nearly two years during the slow settlement of Wuhua district,Kunming and relatively stable,Xishan district,north shore of Dianchi Lake in the Guandu district,and regional trends in large area subsidence and subsidence rate are faster,center for forming several sedimentation funnel,maximum rate of vertical settlement is -54.2 mm/a.

Key words: Sentinel-1, small baseline subset, ascending and descending, mutual authentication data, data fusion

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