A new large-scale posture measurement system based on a six-laser tracer multilateral method

被引：2

作者：

Zheng, Jihui ^{[1
,2
]}

Miao, Dongjing ^{[2
]}

Li, Jianshuang ^{[2
]}

Zhang, Shuai ^{[2
]}

Fan, Baixing ^{[3
]}

机构：

[1] Tianjin Univ, State Key Lab Precis Measuring Technol & Instrume, Tianjin 300072, Peoples R China

[2] Natl Inst Metrol, Div Metrol Length & Precis Engn, Beijing 100029, Peoples R China

[3] Informat Engn Univ, Inst Geog Spatial Informat, Zhengzhou 450001, Peoples R China

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2020年 / 31卷 / 05期

关键词：

metrology; laser multilateral method; stepwise calibration; posture measurement; large scale;

D O I：

10.1088/1361-6501/ab62c6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To realize high-accuracy posture measurement in large scale, a posture measurement system is proposed in this study based on a six-laser multilateral method, mainly composed of six laser tracers and three reflectors-a different number of laser tracers tracks each mirror. But in this state, the system is positive definite, and it cannot achieve the system parameters by self-calibration. To solve this problem, a stepwise calibration method to obtain the system parameters by three-step calibration is presented. Simulations and experiments are carried out to verify the effectiveness of the proposed method. The experimental results show that the posture errors are distributed over [-13.6 '', 6.6 ''] when the measurement range is [5 m, 7 m], which shows that the new measurement system has a high posture measurement accuracy in large scale.

引用

页数：9

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