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

A technology for laser point cloud data and power transmission lines, which is applied in cross-section drawing, re-radiation of electromagnetic waves, radio wave measurement systems, etc.

Inactive Publication Date: 2017-10-10
GUIZHOU POWER GRID CO LTD +1
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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 are

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Embodiment Construction

[0023] A method for making a cross-sectional view of a transmission line channel based on laser point cloud radar data, comprising:

[0024] Step 1. Laser point cloud data preprocessing;

[0025] The laser point cloud data preprocessing described in step 1 includes the splicing of point cloud data, the thinning of point cloud data and the denoising of point cloud data; Process; thinning is to compress point cloud data but retain its spatial characteristics; denoising is to remove useless interfering point cloud data.

[0026] (1) Point cloud splicing: When collecting point clouds, it is limited by the battery life and storage memory of the laser point cloud sensor platform. A transmission line channel needs many flights to complete the point cloud collection. Therefore, each time the point cloud is collected and spliced It is necessary to generate a complete transmission line channel point cloud. The point cloud stitching adopts the geometric features of the point cloud, and...

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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...

Claims

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Application Information

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IPC IPC(8): G01S17/89G01C7/00
CPCG01C7/00G01S17/89
Inventor 虢韬陈凤翔沈平王伟时磊杨渊郑兴文
Owner GUIZHOU POWER GRID CO LTD
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