Fixing positions and orientations of laser trackers during bundle adjustment in multi-station measurements

Wang Zhaoyi; Luo Tao; Wang Wei; Huang Qingqing; Li Xiao

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Fixing positions and orientations of laser trackers during bundle adjustment in multi-station measurements

机译：多站测量捆绑调整期间激光跟踪器的定位和取向

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摘要

The accumulated errors in multi-station measurements make it challenging to meet higher precision requirements for annular or straight tunnel measurements in the accelerator alignment field. In this paper, a study on fixing positions and orientations of laser trackers during the bundle adjustment is presented. First, we adopt the mixed least squares-total least squares algorithm to calculate the spatial-transformation parameters. Then, according to the principle of bundle adjustment based on laser trackers, we design four schemes and compare them to determine which scheme results in the highest precision. Experimental results show that fixing each station's position and orientation can considerably decrease the absolute point errors from 0.130 to 0.069 mm within 15 m x 10 m x 3 m, and fixing stations' orientations is better than fixing their positions. This research can derive high-precision schemes that effectively reduce accumulated errors in annular or straight tunnel measurements, and it can apply to other robotic sensors as well.

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来源
《Measurement Science & Technology》 |2021年第3期|共10页
作者
Wang Zhaoyi; Luo Tao; Wang Wei; Huang Qingqing; Li Xiao;
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作者单位

Univ Sci &

Technol China Natl Synchrotron Radiat Lab Hefei 230029 Peoples R China;

Univ Sci &

Technol China Natl Synchrotron Radiat Lab Hefei 230029 Peoples R China;

Univ Sci &

Technol China Natl Synchrotron Radiat Lab Hefei 230029 Peoples R China;

Univ Sci &

Technol China Natl Synchrotron Radiat Lab Hefei 230029 Peoples R China;

Univ Sci &

Technol China Natl Synchrotron Radiat Lab Hefei 230029 Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类仪器、仪表;
关键词
position and orientation; laser trackers; bundle adjustment; multi-station measurements; accelerator alignment;

机译：位置和方向;激光跟踪器;捆绑调整;多站测量;加速器对齐;

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机译：标记跟踪：使用4圆标记进行位置/方向测量及其跟踪实验

Fixing positions and orientations of laser trackers during bundle adjustment in multi-station measurements

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