Laser point cloud radar data-based method for making cross-section diagram of power transmission line passage

Abstract

The invention discloses a laser point cloud radar data-based method for making a cross-section diagram of a power transmission line passage. The method comprises the steps of (1) laser point cloud data preprocessing; (2) point cloud classification of preprocessed data; (3) power transmission line conductor vectorization; (4) power transmission line splicing and bunching; (5) making of a digital elevation model; and (6) making of the cross-section diagram of a power transmission line. The technical problems that the feasibility and precision of making the cross-section diagram of the power transmission line passage in mountainous areas with rugged terrains are relatively poor, the DEM made by adopting the mode of making a contour line through aerial survey or field mapping in the mountainous areas with rugged terrains is relatively poor in precision and the making precision of the cross-section diagram is affected, and the workload of field work is heavy in the prior art are solved.

Description

technical field [0001] The invention belongs to a method for making a channel diagram of a power transmission line, and in particular designs a method for making a cross-sectional diagram of a channel for a power transmission line based on laser point cloud radar data. Background technique [0002] The cross-sectional view of the transmission line is a section view along the centerline of the transmission line, showing the topography along the centerline, the position and elevation of the objects to be crossed. The cross-sectional diagram of transmission line plays a vital role in the actual construction process such as line feasibility study, initial design, construction drawing design, retesting, and line crossing. [0003] At present, aerial survey technology, satellite remote sensing, and traditional field surveying and mapping technologies are generally used to obtain the DEM and orthographic image data of the survey area, and the position information of towers and cros...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for making transmission line channel cross-sectional diagrams based on laser point cloud radar data, so as to solve the problems in the feasibility and accuracy of making transmission line channel cross-sectional diagrams in mountainous areas with large terrain fluctuations in the prior art. Poor, in mountainous areas with large terrain undulations, the accuracy of DEM production by aerial survey or field surveying and drawing contour lines is poor, which affects the production accuracy of section maps, and the field workload is heavy and other technical problems