Method for establishing independent coordinate system of segmented projection project of annular road

Abstract

The invention discloses a method for establishing an independent coordinate system of segmented projection engineering of an annular road, and relates to the technical field of road management.The method comprises the steps that firstly, on the basis that a coordinate system of a user-defined central meridian and an elevation compensation plane is established, segmentation operation and projection plane setting operation are conducted on the annular road, and a road section corresponding to the annular road is obtained; secondly, obtaining a segmentation weight coefficient corresponding to each road section in the annular road, and obtaining a Lagrange multiplier according to all the segmentation weight coefficients; then obtaining a terrain curvature correction factor corresponding to each road section in the annular road, and obtaining a comprehensive allocation weight according to the terrain curvature correction factors and the segmentation weight coefficients; and finally, on the basis of the comprehensive distribution weight, obtaining the coordinate correction value of the control point of each road section, and revising the control point of each road section according to the coordinate correction value of the control point of each road section, so that the problem of cracks existing in the annular road constructed in the prior art can be effectively solved.

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