Study on the Influence of the Calculation Method on the Accuracy of the Multilateral Coordinate Measurement System
SUN Wei1,MIAO Dong-jing2,LI Jian-shuang2,YAO Yan1,ZHONG Wen1,HE Ming-zhao2,LI Lian-fu2
1. College of Metrology & Measurement Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China
2. National Institute of Metrology,Beijing 100029,China
Abstract：In order to study the influence of the calculation method on the accuracy of the multilateral coordinate measurement system,the multilateral coordinate measurement model was established,and the differences between the two methods of coordinate calculation were analyzed.The simulation experiment of the two methods was carried out for the typical multilateral coordinate measurement system of four stations.The simulation results show that the pre-accurate calibration of system parameters can effectively improve the measurement accuracy,which is improved by 69.5%,64.6% and 46.3% respectively.An experiment was conducted to verify the accuracy of coordinate measurement.The experimental results show that,compared with the synchronous calculation method,the average measurement error of the three groups of experiments after the pre-accurate calibration of system parameters decrease from 203.0μm to 23.8μm,and the average correlation coefficient between the measurement error and the measurement distance of the three groups of experiments is reduced from 99.8% to 37.8%,which verify the simulation results.
孙威,缪东晶,李建双,姚燕,钟文,赫明钊,李连福. 多边法坐标测量系统中解算方式对测量精度的影响研究[J]. 计量学报, 2021, 42(5): 558-563.
SUN Wei,MIAO Dong-jing,LI Jian-shuang,YAO Yan,ZHONG Wen,HE Ming-zhao,LI Lian-fu. Study on the Influence of the Calculation Method on the Accuracy of the Multilateral Coordinate Measurement System. Acta Metrologica Sinica, 2021, 42(5): 558-563.
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2021, Vol. 42 
