Periodic signal parameters’ estimations from random sampling measurements under noncoherent sampling condition

Dušan Agrež

Abstract

Paper presents estimations of the periodic signal parameters in the case of random sampling and under non-coherent sampling condition where randomization of sampling intervals shapes the noise floor in the sampled spectrum with addition of spectral leakage. To achieve the lowest estimation errors the non-parametric interpolated DFT estimation of frequency should be used first for detection of the signal component and after that iterative 4-parametric sine-fit algorithm should be used for other parameters. In any case of estimation, the relative number of random samples has to be at least 0.1.

Keywords

periodic signal, parameter estimation, random sampling, non-coherent sampling condition

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IMEKO-TC4-2016-36.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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