经纬仪
坐标测量机
校准
测量不确定度
激光跟踪器
计算机科学
坐标系
多向性
准确度和精密度
全球定位系统
观测误差
数学
大地测量学
统计
激光器
光学
几何学
人工智能
物理
地质学
电信
方位角
作者
Jody Muelaner,Zhijin Wang,O. C. Martin,Jafar Jamshidi,Paul Maropoulos
标识
DOI:10.1088/0957-0233/21/2/025106
摘要
This paper details a method of estimating the uncertainty of dimensional measurement for a three-dimensional coordinate measurement machine. An experimental procedure was developed to compare three-dimensional coordinate measurements with calibrated reference points. The reference standard used to calibrate these reference points was a fringe counting interferometer with a multilateration-like technique employed to establish three-dimensional coordinates. This is an extension of the established technique of comparing measured lengths with calibrated lengths. Specifically a distributed coordinate measurement device was tested which consisted of a network of Rotary-Laser Automatic Theodolites (R-LATs), this system is known commercially as indoor GPS (iGPS). The method was found to be practical and was used to estimate that the uncertainty of measurement for the basic iGPS system is approximately ±1 mm at a 95% confidence level throughout a measurement volume of approximately 10 m × 10 m × 1.5 m.
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