Mining Subsidence Mapping Technology Based on UAV DEM Survey Point Interpolation Algorithm
In order to realize the accurate measurement of mining subsidence depth and improve the specific implementation plan of surveying and mapping technologies,a mining subsidence surveying and mapping technology based on the unmanned aerial vehicle(UAV)digital elevation model(DEM)survey point interpolation algorithm is studied.According to the results of the DEM measure-ment points,the fractal dimension value is measured and processed,and on this basis,it determines the region where the interpolation inflection point is located,so as to improve the application process of the UAV DEM measurement point interpolation algorithm.The principle of the photo control point layout is combined to define the air triangle area,and the geographic model of mining subsidence area is established by deriving the radial interpolation basis function.On the basis of the transformation condition of the spatial coordi-nate system,the processing results of the vector data superposition are determined,and then combined with the actual value between the dip angle and the rotation angle of the photograph,the measurement accuracy of evaluation index is solved,and it completes the implementation method of the mining subsidence surveying and mapping technology for the UAV DEM measurement point interpola-tion algorithm.The experimental results show that under the above surveying and mapping technology,the difference between the measurement result and the actual settlement depth of the mining area is not more than 1 m,which meets the application requirements of precise measurement,and it can play a certain role in promoting the surveying and mapping implementation scheme.
UAVDEM measuring pointinterpolation algorithmmining subsidence surveying and mappinginterpolation in-flection pointair triangleradial interpolation basis functionspatial coordinate system
万方数据
维普
