关键词: 开采沉陷, D-InSAR, ArcGIS, 干涉影像, GAMMA, 相位解缠

Abstract: The satellite revisit cycle of the differential interferometry synthetic aperture radar technology (D-InSAR) is long,which results in the precise of the mining subsidence monitoring of D-InSAR technology is low.So,it cannot meet the requirement of mining subsidence monitoring.In order to overcome the above shortcomings of D-InSAR technology,taking a mining area of Shuangyashan city as an study example,the mining subsidence is analyzed based on D-InSAR technology and ArcGIS software.Firstly,three TerraSAR images in C bands of October~November in 2014 in the mining area are selected as the interference image data,three pairs of interferometry images are obtained;then,according to the defects of baseline error,atmosphere error,terrain error and time losing correlation of the interferometry images,taking the GAMMA software as the study platform,based on the fine two-pass D-InSAR mode,the interferometry images are processed by using registration method,baseline estimation method and phase unwrapping method;finally,the superposition of the interferometry images and mining plane,mining plan and leveling measurement data are conducted to analyze the dynamic distribution location of the subsidence mining areas,besides that,the mining subsidence is conducted quantitative analysis by taking the interferometry images into ArcGIS software.The study results show that the interval of the 1,2,3 pair of interferometry image are 11,22,33 d respectively,the maximum mining subsidence values of the three intervals are 40,41,45 mm respectively,the average mining subsidence value is 0.86 mm/d,the average mining subsidence value obtained by leveling measurement is 0.92 mm/d in the same period,which further show that the precise of the mining subsidence monitoring method proposed in this paper is ideal.

Key words: Mining subsidence, D-InSAR,ArcGIS, Interferometry images pair, GAMMA, Phase unwrapping