Method and system for geometric correction of UAV (unmanned aerial vehicle) loaded imaging hyperspectrum

The invention relates to a method and a system for the geometric correction of UAV (unmanned aerial vehicle) loaded imaging hyperspectrum. The method comprises the steps of collecting the position and attitude information of the POS sensor with low precision of an existing UAV; analyzing the precise position and attitude information in the photographing centre of a numerical code photograph according to the position and attitude information, so as to generate a DEM (Dynamic Effect Model) of a photograph covering area; correcting position and attitude data corresponding to a plurality of imaging hyperspectral scanning lines in the photographing centre of an adjacent numerical code photograph according to the precise position and attitude information of the photographing centre, so as to obtain the linear array position and attitude information with high precision of the plurality of imaging hyperspectral scanning lines; building a collinearity equation according to the linear array position and attitude information with high precision and the DEM, so as to generate a hyperspectral image. The POS information with high precision is calculated by calculating the area array imaging data of the UAV, the POS data with low precision of the UAV can be optimized, the precise geometric correction of the scanning lines of an imaging hyperspectral imager can be realized, and the technical support is provided for the extensive application of UAV loaded imaging hyperspectrum.