METHOD AND DEVICE FOR EVALUATING BEARING FREQUENCY OF SIGNAL Russian patent published in 2007 - IPC G01R23/16 

FIELD: electronics.

SUBSTANCE: in the suggested method analog signal is digitized, and then serially transformed to a series of complex spectral coefficients in selected basis of Vilenkin-Chrestenson functions. B-spline of given order p-1, p=2,3,4,...,P is transformed to series of complex spectral coefficients in the same basis of Vilenkin-Chrestenson functions, in which discrete signal is transformed. Then complex discontinuous counts are divided element-wise, components of spectral power density are calculated in basis of Vilenkin-Chrestenson spline functions of given power p-1. Then, spectral component r is selected with maximal amplitude of signal power. Value of bearing signal frequency is computed suing formula f_n=r·Δf, where Δf - distance between spectral power components.

EFFECT: increased speed and precision when estimating bearing frequency of signals of different shapes.

2 cl, 4 dwg