Ground Surface Settlement Monitoring by Spaceborne InSAR Technology in Kunming

doi:10.13474/j.cnki.11-2246.2018.0176

Abstract

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:

P258

MA Yuanyuan, CHEN Yunbo, ZUO Xiaoqing, MA Weifeng, WU Wenhao. Ground Surface Settlement Monitoring by Spaceborne InSAR Technology in Kunming[J]. 测绘通报, 2018, 0(6): 55-60.

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