国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

In order to realize the accurate measurement of the mining subsidence depth and improve the specific implementation plan of the surveying and mapping technology, the mining subsidence surveying and mapping technology based on the UAV DEM survey point interpolation algorithm is studied. According to the results of DEM measurement points, the fractal dimension value is measured and processed, and on this basis, the region of the interpolation inflection point is determined, so as to improve the application process of the UAV DEM measurement point interpolation algorithm. Combined with the principle of photo control point layout, the air triangle area is defined, and the geographic model of mining subsidence area is established by deriving the radial interpolation basis function. On the basis of the transformation conditions of the spatial coordinate system, the processing results of vector data superposition are determined, and then combined with the actual values of the dip angle and rotation angle of the photograph, the measurement accuracy evaluation index is solved, and the design of the implementation method of the mining subsidence mapping technology of the UAV DEM measurement point interpolation algorithm is completed. The experimental results show that the difference between the settlement depth measurement results and the actual settlement depth of the mining area is not more than 1m under the effect of the above surveying and mapping technology, which meets the application requirements of accurate surveying and can play a certain role in promoting the improvement of the surveying and mapping implementation plan.