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− In the paper, the two non-parametric algorithms for the period estimation are compared: the autocorrelation approach and the interpolated discrete Fourier transform (IDFT) approach both added with algorithm for searching of the lowest common frequency component or the largest period of the modulated signal. The direct approach by IDFT shows better results(More)
This paper describes the possibility of estimating the apparent power of a signal component using the interpolation of the products of amplitude discrete Fourier transform (DFT) coefficients. As with energy-based approach for the amplitude square estimation of the onechannel signal, the apparent power in the two-channel case can be estimated with the(More)