Vehicle-mounted laser radar scanning target arrangement and measurement method

Abstract

The invention discloses a vehicle-mounted laser radar scanning target arrangement and measurement method. The method comprises the following steps of (1) determining the shape and specification of a target, (2) laying a survey mark, (3) target control point measurement, (4) target plane control measurement, and (5) target elevation control measurement. Compared with the prior art, the method has the advantages that (1) the target laying density is reduced by 30%, and the working efficiency is improved by 40%; (2) the problem of inconsistent uplink and downlink separated scanning precision is solved, and the reliability of the point cloud data is improved; and (3) new technology and new process research is carried out, a high-speed and efficient surveying and mapping production system is constructed, the highway reconstruction and extension surveying and mapping production capacity is effectively improved, and the ultrahigh precision requirements that the error in the pavement point cloud plane position is superior to + / -3 cm, and the error in the elevation is superior to + / -2 cm are met.

Description

technical field [0001] The invention relates to a measurement method, in particular to a vehicle-mounted laser radar scanning target layout and measurement method. Background technique [0002] The use of vehicle-mounted mobile measurement technology can obtain close-range ultra-high-precision and ultra-high-density point cloud data, especially in the field of highway reconstruction and expansion. Its advantages are obvious, such as fast scanning speed and high safety. But still there are following deficiencies: [0003] 1. The workload of auxiliary measurement for target layout is heavy, and the risk of operation safety is high: correcting point cloud data through target control points is an essential process for vehicle radar scanning, but the density, specifications and measurement methods of target points lack the guidance and operation basis of relevant norms and standards , in theory, the denser the target points, the higher the accuracy and reliability of the point c...

AI Technical Summary

Problems solved by technology

[0003] 1. The auxiliary measurement workload of target layout is heavy, and the risk of operation safety is high: Correcting point cloud data through target control points is an essential process for vehicle radar scanning, but the target point layout density, specifications and measurement methods lack the guidance and operation basis of relevant norms and standards , in theory, the denser the target points, the higher the accuracy and reliability of the point cloud data, but the higher the workload of auxiliary measurement, the higher the construction risk of the road surface operation, and the higher the operating cost, how to determine the target layout with the best cost performance Significant to the measurement scheme

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