Abstract: Synthetic aperture radar differential interferometry (D-InSAR) technology can monitor large-scale surface deformation information, but a single D-InSAR technique cannot accurately analyze the range and location of the settlement distribution.Firstly, we selected two images of the C-band Radarsat-2 from July to December and the six-monthly Sentinel-1 images from April to May 2015 as the number of interference images. According to the composition of the six interferometric pairs, they were differentially interpolated by the second-track method. Processing and phase unwrapping to extract interferograms. The D-InSAR differential interferograms were imported into ArcGIS with mining planes and mining plan maps to analyze the spatial dynamic distribution of mining subsidence areas in the mining area and quantitative analysis. And finally using a grey theoretical model prediction.The results show that the D-InSAR overlay analysis can reflect the location and distribution of the settlement area during coal mining. The maximum relative error and variance ratio between the predicted and measured D-InSAR values are 11.5% and 0.097 respectively.

Key words: D-InSAR, interference image pair, GIS, overlay analysis, GM