The Measurement Uncertainty of Delay Between Channels
Liang Zhi-guo · Jiliang xuebao · 2005
The uncertainty of evaluation results of delay between channels of linear measurement system by using the least mean square four-parameter sine-wave curve-fit method is described. Some principal error sources of delay between channels are discussed, including the signal frequency errors, the harmonic distortion of sampling serials, the noise and the spurious distortion, the jitter of the signal periods in sampling serials, the calculation errors of software and some others. In an example of experiment, the analysis and uncertainty evaluation results of delay between channels by using the method are presented. The courses and conclusion of analysis and uncertainty evaluation of delay between channels can be applied to the uncertainty evaluation of measurement standards of delay between channels.