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16-07-2020

High-Precision Harmonic Analysis Algorithm Based on Five-Term MSD Second-Order Self-Convolution Window Four-Spectrum-Line Interpolation

Authors: Qingjiang Yang, Xiangxiang Qu

Published in: Mobile Networks and Applications | Issue 2/2023

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Abstract

For the frequency spectrum leakage and fence effect generated in Fast Fourier Transform (FFT) during asynchronous sampling and integral period truncation affect the precision of harmonic detection, a new algorithm for harmonic analysis based on four-spectrum-line interpolation FFT with second-order self-convolution window with five-term Maximum-Sidelobe-Decay (MSD) was proposed and the polynomial fitting method was used to construct the four-spectrum-line interpolation correction formula. The simulation results showed that this algorithm could improve the detection accuracy of amplitude, phase and frequency by 1–2 orders of magnitude compared with other commonly used windowed interpolation algorithms.
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Metadata
Title
High-Precision Harmonic Analysis Algorithm Based on Five-Term MSD Second-Order Self-Convolution Window Four-Spectrum-Line Interpolation
Authors
Qingjiang Yang
Xiangxiang Qu
Publication date
16-07-2020
Publisher
Springer US
Published in
Mobile Networks and Applications / Issue 2/2023
Print ISSN: 1383-469X
Electronic ISSN: 1572-8153
DOI
https://doi.org/10.1007/s11036-020-01606-3

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