Method of reconstructing 3D power line model based on airborne laser radar point cloud data

An airborne laser radar and point cloud data technology, applied in the field of electric power, can solve the problems of difficulty in accurately obtaining the actual physical state of the power grid and power optical fibers, low positioning accuracy of power line data, and difficulty in line inspection.

Inactive Publication Date: 2018-05-22
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0004] The present invention mainly solves the technical problems in the prior art that the field survey requires a lot of time and manpower investment, and it is difficult to perform line inspection in some areas due to complex terrain, and provides a 3D power line model based on airborne laser radar point cloud data reconstruction Methods
[0005] The present invention mainly solves the problems in the prior art that the positioning accuracy of power line data is low and it is difficult to accurately obtain the actual physical state of the power grid and power optical fiber, and provides a method for reconstructing a 3D power line model based on airborne lidar point cloud data

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  • Method of reconstructing 3D power line model based on airborne laser radar point cloud data
  • Method of reconstructing 3D power line model based on airborne laser radar point cloud data
  • Method of reconstructing 3D power line model based on airborne laser radar point cloud data

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Embodiment

[0067] Such as image 3 As shown, the method for reconstructing a 3D power line model based on airborne lidar point cloud data includes the following steps:

[0068] Step 1. Carry a set of airborne laser LiDAR system on the airborne carrier, including inertial measurement unit (IMU), differential GPS (DGPS), laser scanning ranging system and imaging device;

[0069] Step 2, using the airborne lidar in step 1 to collect data, and obtain airborne lidar data;

[0070] Step 3, according to the data obtained in step 2, extract the features of the LiDAR data (single point features and neighborhood features), including the spatial coordinates of the point cloud, intensity information, echo information (echo position and echo intensity) and Features based on eigenvalues ​​and eigenvectors, echo-based features, density-based features, etc.;

[0071] Step 4, classify the data corresponding to the attribute characteristics of the data obtained in step 3;

[0072] Step 5, using the cla...

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Abstract

The invention relates to a method of reconstructing a 3D power line model, which belongs to the technical field of power and particularly relates to a method of reconstructing a 3D power line model based on airborne laser radar point cloud data. The method is based on the airborne laser radar point cloud data, an engineering survey method by field patrol is not needed, the time input and the laborinput for field survey are reduced, the method is particularly suitable for airborne laser radar data in complex terrain or even dangerous areas and areas which are hard to carry out patrol, and themethod adopts a piecewise model growth (PMG) and data-driven mode, and the airborne laser radar power line data positioning precision can be improved.

Description

technical field [0001] The invention relates to a method for reconstructing a 3D power line model, which belongs to the field of electric power technology, in particular to a method for reconstructing a 3D power line model based on airborne laser radar point cloud data. Background technique [0002] Airborne LiDAR (Airborne Light Detection And Ranging, LiDAR) is an active aerial remote sensing earth observation system. It is an emerging remote sensing technology developed and put into commercial application in the early 1990s. It integrates laser technology , Global Positioning System (GPS) and computer technology in one. This technology has produced a major breakthrough in the real-time acquisition of three-dimensional spatial information, and provides a new technical means for obtaining high-spatial-resolution geospatial information. [0003] At present, because LiDAR can obtain high-precision surface terrain data, it has incomparable advantages compared with traditional ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89G01S17/87G01S19/47
CPCG01S17/87G01S17/89G01S19/47
Inventor 李晓峰胡川尹洪王星超高圣陈乐天
Owner STATE GRID CORP OF CHINA
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