First Coordinate Measurements Uncertainty Evaluation Software Fully Consistent with the GPS Philosophy

This paper presents a short review of standards pertaining to uncertainty of coordinate measurements, new software developed by the authors as well as theoretical models used within the software. The software has been developed with the following assumptions: in the coordinate measurements the uncertainty is analyzed separately for each characteristic, and the uncertainty of measurement for a particular characteristic is calculated with a formula describing the characteristic as a function of differences of coordinates of characteristic points of the workpiece. Examples of use of the software for measurement uncertainty evaluation of different GPS characteristics are also presented.