A high-precision airspace visibility analysis method in cylindrical coordinate space

Abstract

The application discloses a high-precision airspace visibility analysis method in a cylindrical coordinate space, comprising the following steps: S1, selecting a region to be analyzed and collecting DEM elevation data to be analyzed; S2, converting the DEM elevation data to a cylindrical coordinate space; S3, calculating grid direction information in the DEM elevation data; S4, dividing the DEM elevation data into M sub-regions according to the direction by using the grid direction information; S5, calculating the visibility at an air height Δh of a certain grid; and S6, obtaining the airspace visibility at the air height Δh of the region by using the visibility of all the grids calculated in step 5. The method uses the maximum direction angle and the minimum direction angle to describe the direction information of a DEM grid, more accurately describes the grid information, and thus higher analysis precision can be obtained, the analysis processing efficiency and precision are improved, a large number of numerical calculations are avoided, the method is easy to implement, and is suitable for large-scale data analysis.

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