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

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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

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

CLC Number: