A mining area surface
subsidence synthetic aperture radar interferometry monitoring and calculating method belongs to mining area surface
subsidence monitoring and calculating method. The method comprises the following steps: having format conversion, calibration, pre-filtering and interference to
interferometric synthetic aperture radar (InSAR) data to obtain an InSAR interference phase, eliminating flat ground effect, an
terrain phase and
orbit errors of the interference phase by means of precise
orbit data and an external dynamic effect model (DEM), obtaining phase values which only contain deformation information of a ground surface after filtering to residual phases, on the condition of
large deformation gradient, through
phase unwrapping, obtaining deflection of the edge of a mining
subsidence basin, fusing the deflection with a few ground measured data, reversely deducing probability
integral method parameters of the subsidence basin through a
genetic algorithm, calculating sinking values of an arbitrary point of the whole surface subsidence basin through required probability
integral method parameters and geological mining data, and therefore mining subsidence deformation field is produced. The mining area surface subsidence
synthetic aperture radar interferometry monitoring and calculating method has the advantages of being high in monitoring accuracy, large in monitoring range, convenient to operate, low in cost and large in technical content.