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A Method for Establishing Geographical Coordinate System and Six Degrees of Freedom Measurement of Tracker

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

Active Publication Date: 2018-07-27
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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  • A Method for Establishing Geographical Coordinate System and Six Degrees of Freedom Measurement of Tracker
  • A Method for Establishing Geographical Coordinate System and Six Degrees of Freedom Measurement of Tracker
  • A Method for Establishing Geographical Coordinate System and Six Degrees of Freedom Measurement of Tracker

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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] Such as 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 aft...

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Abstract

The invention belongs to the technical field of six-degree-of-freedom measurement, in particular to a method for establishing a tracker geographic coordinate system and six-degree-of-freedom measurement, and aims to solve the problem that the prior art is difficult to implement rapid layout measurement. The method includes four steps: equipment installation, transformation point arrangement, calculation of coordinate system transformation relationship measurement. The invention relates to a method for establishing a tracker geographic coordinate system and six-degree-of-freedom measurement. Three conversion points are used to solve the transformation relationship between an electronic theodolite and a laser tracker instrument coordinate system to establish a laser tracker geographic coordinate system. The combined measurement of 3 laser trackers that establish a unified geographic system converts the three-dimensional point measurement into six-degree-of-freedom measurement, effectively improving the six-degree-of-freedom measurement range, and the high-precision point measurement of the laser tracker will obtain high-precision attitude. Compared with the stand-alone attitude measurement components of the laser tracker (such as T‑Mac), the measurement accuracy and measurement range are greatly improved.

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 Patents(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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