3D laser scanner spherical target of installation positioning device and using method thereof

Abstract

The invention discloses a 3D laser scanner spherical target of an installation positioning device and a using method thereof. A GPS antenna is detachably installed above a spherical target of a 3D laser scanner, and the center of the GPS antenna is coaxial with the center of the spherical target. The 3D laser scanner spherical target and the GPS are integrated. Differential measurement is performed through a GPS receiver on a base station in a measurement area and a GPS receiver on the target to get the center coordinates of the spherical target. Point cloud block splicing and coordinate system conversion are carried out by using the center coordinates of a common target scanned by adjacent scanning sites. Direct and quick measurement of the center coordinates of the 3D laser scanner spherical target is realized. Moreover, there is no need for inter-vision between the GPS base station and the spherical target measuring station, field observation is greatly facilitated, and the work efficiency is improved.

Description

1. Technical field [0001] The invention relates to a spherical target used for point cloud data registration of a three-dimensional laser scanner and a method for using the same, in particular to a spherical target for a three-dimensional laser scanner equipped with a positioning device and a method for using the same. 2. Technical Background [0002] So far, in various 3D laser scanner measurements, spherical targets are widely used as a tool for point cloud data registration. By obtaining the spherical center coordinates of spherical targets, the conversion of laser scanning point cloud data and laser scanning at different stations are realized. The unification of the measuring coordinate system of the instrument. The spherical center coordinates of the spherical target are usually measured by a total station and the sub-site cloud is imported into the supporting software of the scanner, and the spherical center coordinates of the spherical target are automatically extract...

AI Technical Summary

Problems solved by technology

[0003] ① When using a total station to measure the spherical center coordinates of a spherical target, the measurement data obtained by aiming at the edge of the spherical target can only be used, combined with the radius of the spherical target, a data model is constructed to calculate the spherical target’s spherical center coordinates, Affects the measurement accuracy of the spherical center coordinates of the spherical target; at the same time, the total station station and the spherical target of the 3D laser scanner must be in sight, which is not convenient for field observation

[0005] Therefore, it inevitably brings a lot of trouble and errors when using the traditional method to obtain the spherical center coordinates of the spherical target of the 3D laser scanner and perform point cloud data registration