Improvement of estimation accuracy of the central frequency of narrow-band process in FFT processor

Authors

  • V. I. Koshelev Ryazan State Radio Engineering University, Russian Federation
  • V. N. Gorkin Ryazan State Radio Engineering University, Russian Federation

DOI:

https://doi.org/10.3103/S0735272704010108

Abstract

Several algorithms are suggested making it possible to improve the estimation accuracy of the central frequency in a narrow-band process. The algorithms can be used in the fast Fourier transform processor during signal detection. Analytical formulas of correction for several weight functions (windows) are derived. An interpolation algorithm for improvement of such estimation for arbitrary windows is developed. The gain in accuracy of central frequency measurement for various methods and weight functions is defined.

References

RABINER, L.R.; GOLD, B. Theory and Application of Digital Signal Processing. New Jersey: Prentice-Hall, 1975.

KULIKOV, Y.I. Methods of Random Process Measurements [in Russian]. Moscow: Radio i Svyaz’, 1986.

HARRIS, F.J. "On the use of windows for harmonic analysis with the discrete Fourier transform," Proc. IEEE, v.66, n.1, p.51-83, 1978. DOI: https://doi.org/10.1109/PROC.1978.10837.

YARKHO, T.A. "Localizing the spectral component peak in fast Fourier transforms," Radiotekhnika (Kharkiv), n.90, p.6-11, 1989.

MORZHAKOV, A.A. Radiotekhnika, n.10, p.41-43, 1988.

POPOV, D.I.; GUS’KOV, S.V.; KOSHELEV, V.I. Radiotekhnika, n.6, p.9-12, 1985.

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Published

2004-01-20

Issue

Vol. 47 No. 1 (2004)

Section

Research Articles