Algorithm for frequency estimation of signals composed of multiple single-tones

被引：2
作者：
Wu J.-K. [1 ,2 ,3 ]
He B.-T. [2 ]
机构：
[1] Department of Electrical Engineering, Guangxi University
[2] Department of Electrical Engineering, Zhejiang University
[3] Sanxing Science and Technology Co. Ltd., AUX Group
来源：
Journal of Zhejiang University-SCIENCE A | 2006年 / 7卷 / 2期
关键词：
Frequency estimation; Lagrange interpolation; Multi-component signal; Numerical differentiation;
D O I：
10.1631/jzus.2006.A0179
中图分类号：
学科分类号：
摘要：
The high-accuracy, wide-range frequency estimation algorithm for multi-component signals presented in this paper, is based on a numerical differentiation and central Lagrange interpolation. With the sample sequences, which need at most 7 points and are sampled at a sample frequency of 25600 Hz, and computation sequences, using employed a formulation proposed in this paper, the frequencies of each component of the signal are all estimated at an accuracy of 0.001% over 1 Hz to 800 kHz with the amplitudes of each component of the signal varying from 1 V to 200 V and the phase angle of each component of the signal varying from 0° to 360°. The proposed algorithm needs at most a half cycle for the frequencies of each component of the signal under noisy or non-noisy conditions. A testing example is given to illustrate the proposed algorithm in Matlab environment.
引用
收藏
页码：179 / 184
页数：5
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