Dr. Geng Lei Profile

Dr. Geng Lei

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Proceedings Article | 28 December 2010 Paper

Analysis of angle measurement uncertainty for wMPS

Lei Geng, Jigui Zhu, Xueyou Yang, Zhi Xiong

Proceedings Volume 7544, 754403 (2010) https://doi.org/10.1117/12.885389

KEYWORDS: Fluctuations and noise, Transmitters, Receivers, Monte Carlo methods, Head, Sensors, Mathematical modeling, Metrology, Time metrology, Laser development

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Workspace Measurement Position System (wMPS) is a newly developed laser based measuring system for large scale metrology. Initially, theoretical definition of metrology process models of wMPS is described and uncertainties are propagated from internal parameters using Monte Carlo simulation in which uncertainty decreases with sampling duration. Angular uncertainty is affected by internal parameters pointed out by mathematical model and experiments are then carried out to determine the actual uncertainty in the azimuth and elevation in order to select appropriate parameters to design the measuring system. Experiment results reveal that wMPS has the ability of accurate measurement for large volume and the uncertainty is less affected by the working volume. Measuring results shows wMPS designed based on the parameters achieves relative high measuring precision.

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