METHOD FOR DETERMINATION OF FREQUENCY OF HARMONIC SIGNALS IN PRESENCE OF INTERFERENCE

摘要

Method for determination of frequency of harmonic signals in presence of interference includes Hilbert transformation of autocorrelation function of distorted with interference periodic signals. Additionally one includes determination of autocorrelation function (ACF) of signal under investigation, medial filtration, determination of phase characteristic of filtered auto-correlation function, approximation of phase characteristic by method of least squares and evaluation of frequency of signal by approximated phase characteristic.