A TEST SYSTEM FOR THE EVALUATION OF THE EXPANDED UNCERTAINTY IN DSP-BASED ANALYSIS OF BI-TONE SIGNALS

摘要

A virtual instrument has been implemented to evaluate the uncertainty affecting the spectral component of bi-tone mixed signals when they are evaluated by means of the virtual time-domain approach. A numerical method relying on the Monte-Carlo method is used as an advantageous alternative to the analytical procedures suggested by the ISO "Guide to the expression of uncertainty in measurement". The fundamentals of the method are recalled and its effectiveness is proven by the results of some experimental tests reported in the paper.