An improvement of the nonparametric frequency estimation below two signal periods using two windows

Begeš, Gaber (author), Agrež, Dušan (author), Hudoklin, Domen (author)

This article presents a method for improving the nonparametric frequency estimation of the fundamental periodicity of a multifrequency signal when a smaller number of periods are covered—up to two periods in the measurement time. The estimation procedure uses the weights of two Rife-Vincent I (RV1) windows on the same set of acquired signal samples and then uses a combination of two consecutive discrete Fourier transform (DFT) amplitude coefficients in the quotient. To reduce the harmonic influence, the technique of near-coherent frequency evaluation is used, and to reduce the interharmonic influence, a method can be added, where the rest of the signal is averaged after determining the periodic part of the signal. The simulation and experimental results obtained show a very good compromise between fast and accurate estimation.

• Language: English
• Keywords: discrete Fourier transform (DFT) coefficients, frequency, interpolation, maximum sidelobes decay (MSD) windows, nonparametric estimation, spectral distortion
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FE - Faculty of Electrical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 11 str.
• Numbering: Vol. 73, art. 6502111
• PID: 20.500.12556/RUL-173576
• UDC: 621.3
• ISSN on article: 1557-9662
• DOI: 10.1109/TIM.2024.3368492
• COBISS.SI-ID: 192802563
• Publication date in RUL: 18.09.2025

Record is a part of a journal

• Title: IEEE transactions on instrumentation and measurement
• Shortened title: IEEE trans. instrum. meas.
• Publisher: Institute of Electrical and Electronics Engineers
• ISSN: 1557-9662
• COBISS.SI-ID: 528591385

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: koeficienti diskretne Fourierjeve transformacije (DFT), frekvenca, interpolacija, okna največjega upada stranskih rež (MSD), neparametrična ocena, spektralno popačenje

Projects

• Funder: ARIS - Slovenian Research and Innovation Agency
• Project number: P2-0225
• Name: Metrologija in kakovost