激光跟踪多边异步测量系统标定点布局研究

doi:10.3969/j.issn.1000-1158.2023.08.06

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Abstract To improve the calibration accuracy of the base station of laser tracking multilateral asynchronous measurement system, the layout of calibration points is studied. Firstly, simulation experiments are carried out under different calibration point layouts based on the principle of laser tracking multilateral method, and the results show that the calibration accuracy of the base station is different under different calibration point layouts with different values of position dilution of precision (PDOP). Secondly, based on PDOP, the study of the layout of calibration points in different dimensions is done. The results shows that the calibration accuracy of the base station is poor when the calibration points are laid out in a straight line, and the calibration accuracy of the base station improves when the calibration points are laid out in the plane or in the space range with the layout expansion and the points number increase. Finally, the experiments for measured points demonstrat that the PDOP can quantitatively characterize the pros and cons of the calibration points layout. When the calibration points are laid out in a three-dimensional space area, the PDOP value corresponding to the base station is <3, the spatial distance between the coordinates of the measured point and the reference coordinates is ≤4.4μm and the calibration accuracy of the base station and the measurement accuracy of the measured points are higher.

Key words： metrology;multilateral asynchronous measurement laser multilateral method;layout of calibration points;PDOP;calibration accuracy

Received: 21 July 2022 Published: 22 August 2023

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	YAN Yang
	XIA Wen-jie
	LIN Hu

Cite this article:

YAN Yang,XIA Wen-jie,LIN Hu. Research on the Layout of Calibration Points for Laser Tracking Multilateral Asynchronous Measurement System[J]. Acta Metrologica Sinica, 2023, 44(8): 1188-1195.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2023.08.06 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2023/V44/I8/1188

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