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

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

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.

• Jezik: Angleški jezik
• Ključne besede: discrete Fourier transform (DFT) coefficients, frequency, interpolation, maximum sidelobes decay (MSD) windows, nonparametric estimation, spectral distortion
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FE - Fakulteta za elektrotehniko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 11 str.
• Številčenje: Vol. 73, art. 6502111
• PID: 20.500.12556/RUL-173576
• UDK: 621.3
• ISSN pri članku: 1557-9662
• DOI: 10.1109/TIM.2024.3368492
• COBISS.SI-ID: 192802563
• Datum objave v RUL: 18.09.2025

Gradivo je del revije

• Naslov: IEEE transactions on instrumentation and measurement
• Skrajšan naslov: IEEE trans. instrum. meas.
• Založnik: Institute of Electrical and Electronics Engineers
• ISSN: 1557-9662
• COBISS.SI-ID: 528591385

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: koeficienti diskretne Fourierjeve transformacije (DFT), frekvenca, interpolacija, okna največjega upada stranskih rež (MSD), neparametrična ocena, spektralno popačenje

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P2-0225
• Naslov: Metrologija in kakovost