ON THE UNCERTAINTY COMPONENTS IN SPECTRAL ANALYSIS OF BI -TONE WAVEFORMS ARISING FROM THE VIRTUAL TIME-DOMAIN APPROACH

Lorenzo Peretto, Renato Sasdelli, Roberto Tinarelli

Abstract

Multi-tone signals are discrete-spectrum signals with spectral components located at non-harmonically related frequencies. Their spectral analysis can be performed in short observation intervals by means of a method that combines the use of a virtual time domain and statistical techniques. The contributions to uncertainty that specifically arise from the implementation of the method are discussed in the paper and a study is developed to optimize the measurement technique in the case of bi-tone, periodic or not, signals. Finally, experimental results, which confirm theory, are reported and discussed.

Keywords

uncertainty analysis, multi-tone waveforms, random sampling, digital signal processing, statistical analysis

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IMEKO-TC4-2001-124.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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