Effects of Measuring Instrument and Measuring Points on Circular Coordinate Measurement Precision

摘要

There are many uncertainties influencing the precision of coordinate measurement, most of which can be detected and compensated according to ISO 10360. However the effects of measuring instrument accuracy and information of measuring points including number and distribution are not duly researched. There's few reference for measurement personnel to reduce the effects. In this paper three experiments are provided to explore the effects of measuring instrument accuracy and measuring points' distribution on circular coordinate measurement precision. With the analysis of the data acquired by hundred thousand simulations with Matlab we find out the precision variation tendency of each impact factor. The analysis offers a standard of measuring instrument accuracy and measuring point's selection.