Evaluation of uncertainty in multilateration with laser tracker

Yu, 任 瑜 Ren; Fang-fang, 刘芳芳 Liu; Feng, 张丰 Zhang; Yun-xia, 傅云霞 Fu; Jigui, 邾继贵 Zhu

doi:10.3788/ope.20182610.2415

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Spatial Coordinate Frame Align1

Mirror Reflection Laser Tracking Interferometry Principle1

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2022

2023

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Cited by 2 publications

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“…w w w   are set as the reciprocal of the square of the j th reference point's the uncertainty. Then by nonlinear optimization calculation, the coordinate system of each laser tracker aligns with a global spatial coordinate frame [5] .…”

Section: Spatial Coordinate Frame Alignmentioning

confidence: 99%

Dynamic combined measurement of multiple laser trackers and application

Ren,

Zhang,

2023

Optical Metrology and Inspection for Industrial Applications X

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Section: Spatial Coordinate Frame Alignmentioning

confidence: 99%

Dynamic combined measurement of multiple laser trackers and application

Ren,

Zhang,

2023

Optical Metrology and Inspection for Industrial Applications X

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“…As shown in Figure 1, let the reference points of the two ends of the length standard be P1, P2, O is the laser tracker origin, and O' indicates the mirror image origin of the laser tracker. The angular uncertainty of the laser tracker is much larger than the distance uncertainty, and in order to obtain a smaller uncertainty of the length measurement, the three points O, P1, and P2 should be made to be co-linear [10,11] . In order to achieve the colocation of O, P1, and P2, this paper adopts the laser tracking interferometric length measurement method based on mirror reflection.…”

Section: Mirror Reflection Laser Tracking Interferometry Principlementioning

confidence: 99%

Optimization method of one-dimensional standard calibration based on laser tracking interferometry

Hu¹,

Zhang²,

Ren³

2022

Optical Design and Testing XII

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In order to improve the robustness of the traditional laser tracking interferometry method and make the calibration results of the one-dimensional standard more accurate and reliable, a laser tracking interferometry calibration optimization method in multiple attitudes is proposed in this paper. The method firstly constructs a multi-stance 1D standard layout based on the traditional laser tracking interferometric length measurement, and collects measurement information under different attitudes by laser tracker, then uses a weight-based calibration result optimization strategy to optimize the combination of measurement data, and then outputs the calibration results and performs error source analysis and uncertainty assessment. The experimental analysis was carried out and compared with the CMM method, and the En value was 0.1, which verified the reasonableness of the uncertainty assessment, and the comparison with the measurement results of the CMM method showed that the calibration optimization scheme for multiple poses was more reliable than that for single poses. The optimized method provides a new calibration scheme for realizing the quantity traceability of high-precision one-dimensional standard, which has good practicality and certain guiding significance.

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Evaluation of uncertainty in multilateration with laser tracker

Cited by 2 publications

References 0 publications

Dynamic combined measurement of multiple laser trackers and application

Dynamic combined measurement of multiple laser trackers and application

Optimization method of one-dimensional standard calibration based on laser tracking interferometry

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