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Method for building tracker geographic coordinate system and measuring six degrees of freedom

A technology of geographic coordinate system and tracker, which is applied in the direction of measuring devices, instruments, surveying and navigation, etc., can solve the problems such as difficult to realize rapid layout measurement, achieve the effect of improving measurement accuracy and measurement range, and improving the measurement range

Active Publication Date: 2016-06-01
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the prior art is difficult to realize rapid layout measurement, and to provide a method for establishing the geographic coordinate system of the tracker and six degrees of freedom measurement

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  • Method for building tracker geographic coordinate system and measuring six degrees of freedom
  • Method for building tracker geographic coordinate system and measuring six degrees of freedom
  • Method for building tracker geographic coordinate system and measuring six degrees of freedom

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Embodiment Construction

[0020] A method for establishing a tracker geographic coordinate system and six degrees of freedom measurement of the present invention is described below in conjunction with the accompanying drawings and specific embodiments:

[0021] like figure 1 As shown, a method for establishing a tracker geographic coordinate system and six degrees of freedom measurement includes the following steps:

[0022] The first step: equipment installation;

[0023] Set up the electronic theodolite, adjust the instrument level of the electronic theodolite, the optical axis pointing azimuth is the actual geographical azimuth; if there is no azimuth reference, the azimuth zero of the subsequent measurement is the azimuth zero of the electronic theodolite; when erecting three trackers, it should meet the following requirements: Surround the measured object, corresponding to the three measured points A, B, and C; within the range; the equipment foundation is stable, and the position is fixed after ...

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Abstract

The invention belongs to the technical field of the measurement of six degrees of freedom, specifically relates to a method for building a tracker geographic coordinate system and measuring the six degrees of freedom, and aims at solving a problem that the quick arrangement and measurement are difficult to achieve in the prior art. The method comprises four steps: equipment installation, conversion point arrangement, calculation of transformation relation of a coordinate system, and measurement. The method employs three conversion points, solves the transformation relation between the coordinate systems of an electronic theodolite and a laser tracker, and builds the geographic coordinate system of the laser tracker. Three laser trackers which have a unified geographic coordinate system are combined for measurement, thereby enabling three-dimensional point measurement to be converted into the measurement of six degrees of freedom, and effectively enlarging the measurement range of six degrees of freedom. Moreover, the high-precision point measurement of the laser trackers will obtain high-precision posture output. Compared with a laser tracker one-machine posture measurement assembly (T-Mac), the method greatly improves the measurement precision and enlarges the measurement range.

Description

technical field [0001] The invention belongs to the technical field of six-degree-of-freedom measurement, and in particular relates to a method for establishing a tracker geographic coordinate system and six-degree-of-freedom measurement. Background technique [0002] At present, the six-degree-of-freedom measurement is mainly based on the instrument measurement coordinate system. The relatively mature professional measurement equipment includes laser trackers produced by Leica and Faro. Taking Leica's latest AT901 model as an example, its six-degree-of-freedom measurement range is 9m, and the point measurement range is 80m, but it cannot directly establish a geographic coordinate system. [0003] To establish a geographic coordinate system, it is necessary to use a north finder with a theodolite, or a theodolite with a known geographic orientation, and measure and introduce the local geographic posture. It can be seen from the literature that the existing method of combini...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01C21/00
Inventor 汪涛赵天承张辰松蔡雯琳刘柯
Owner BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH
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