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| Uncertainty Analysis of Spatial Distance in Spherical Coordinates |
| HE Ming-zhao1,LI Lian-fu1,LI Jian-shuang1,GAN Xiao-chuan2,SONG Jin-cheng3,GUO Li-zhen3,XU Wei-yi3 |
1.National Institute of Metrology, Beijing 10029, China
2.Changcheng Institute of Metrology & Measurement, Beijing 100095 ,China
3.Beijing Aerospace Measurement and Testing Technology Research Institute, Beijing 100076, China
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Abstract The calculation methods of the spatial distance in the orthogonal coordinate system and the spherical coordinate system are analyzed, and the measurement uncertainty in the spherical coordinate system is derived, and an example of the minimum uncertainty is given. The spherical coordinate system user can quickly evaluates the results and optimizes the measurement layout.
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2018, Vol. 39 
