An Improved Adaptive Template Size Pixel-Tracking Method for Monitoring Large-Gradient Mining Subsidence

Figure 3

Location of the study areas. In (a), the red frame represents the areas covered by the RADARSAT-2 images, green points are GPS monitoring points, and the white arrow represents the direction of mining. (b) is the interferogram generated by two RADARSAT-2 SAR images on 27 November 2012 and 27 March 2013. Because of the limitations of deformation gradient and incoherence, the D-InSAR technique based on phase unwrapping can only obtain the deformation information in edge of the subsidence basin.