Coordinate evaluation using three-dimensional reference standard

Yu Ren

doi:10.1117/12.2550253

12 March 2020 Coordinate evaluation using three-dimensional reference standard

Yu Ren

Proceedings Volume 11439, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 114391K (2020) https://doi.org/10.1117/12.2550253
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

To ensure the traceability of coordinate measurements made by large-scale measurement instrument, the direct evaluation based on three dimensional coordinates has been a new trend instead of the traditional verification by the measurement of lengths. This paper proposes a general large-scale coordinate evaluation manner and studies some key technical problems in detail. Firstly, a three dimensional reference standard is established and multilateration is applied to ensure direct traceability of the reference values to a length standard. Secondly, the coordinate reference values and their uncertainties after transformation are calculated. Thirdly, the Measuring Capacity Index ( C_m ) is calculated and some strategies for increasing C_m are recommended. Finally, the evaluation process is demonstrated with several experiments.

Citation Download Citation

Yu Ren "Coordinate evaluation using three-dimensional reference standard", Proc. SPIE 11439, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 114391K (12 March 2020); https://doi.org/10.1117/12.2550253

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