FREQUENCY ESTIMATION IN THE MEASUREMENT TIME BELOW ONE PERIOD

Dušan Agrež

Abstract

In paper, a frequency domain estimation algorithm for fast measurement of the signal frequency in the measurement time below one period is presented. When the time is shortened below the signal period, the DC coefficient of the discrete Fourier transformation is taken into account. An analysis is made to study the influence of the leakage effect, offset in the measurement channel, and noise when the Rife-Vincent windows class I (the rectangular window, the Hann window, and others with higher order) are used. Simulations changing the bias of the amplitude DC coefficients support the analysis.

Keywords

frequency estimation, DC amplitude coefficients, Rife-Vincent windows class I, uncertainty, bias error

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IMEKO-WC-2015-TC4-098.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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