On statistical analysis of least squares matching methods for frequency estimation of a real sinusoid

被引：3
作者：
Wang, Kui [1 ]
Tu, Yaqing [1 ]
Yan, Hua [1 ]
机构：
[1] Army Logist Univ PLA, Chongqing 401311, Peoples R China
来源：
DIGITAL SIGNAL PROCESSING | 2020年 / 104卷
基金：
中国国家自然科学基金;
关键词：
Frequency estimation; Least squares; Variance analysis; Real sinusoid;
D O I：
10.1016/j.dsp.2020.102792
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A statistical analysis of the least squares matching methods for single-tone frequency estimation is carried out in this paper. Based on asymptotic derivations, an accurate frequency variance expression is provided for different least squares matching methods with variable parameters. Two representative least squares matching methods are involved to show the validity of the variance expression, however, their performances have been proved suboptimal with current parameter settings. After wide discussion, we propose new strategies to choose parameters and achieve further improvements both in accuracy and computational efficiency. (C) 2020 Elsevier Inc. All rights reserved.
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页数：11
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