A New Frequency Estimation Method Based on Adaptive Notch Filter and Its Performance Analysis

LI Ming; TU Ya-qing; SHEN Ting-ao; YANG Hui-yue

doi:10.3969/j.issn.0372-2112.2014.01.008

您当前的位置：

首页 >

文章列表页 >

A New Frequency Estimation Method Based on Adaptive Notch Filter and Its Performance Analysis

更新时间：2025-07-16

- A New Frequency Estimation Method Based on Adaptive Notch Filter and Its Performance Analysis
- Acta Electronica Sinica Vol. 42, Issue 1, Pages: 49-57(2014)
- 作者机构：
  
  后勤工程学院信息工程系,重庆,401311
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2014.01.008
  CLC： TN911.7
- Published：2014
- 稿件说明：
移动端阅览
LI Ming, TU Ya-qing, SHEN Ting-ao, et al. A New Frequency Estimation Method Based on Adaptive Notch Filter and Its Performance Analysis[J]. Acta Electronica Sinica, 2014, 42(1): 49-57.
DOI：

LI Ming, TU Ya-qing, SHEN Ting-ao, et al. A New Frequency Estimation Method Based on Adaptive Notch Filter and Its Performance Analysis[J]. Acta Electronica Sinica, 2014, 42(1): 49-57. DOI： 10.3969/j.issn.0372-2112.2014.01.008.

摘要

现有的自适应陷波滤波器（ANF）受误差函数所限，导致其自适应频率估计方法收敛速度较慢，对初始迭代频率值设定范围要求较高，特别针对频率接近于0或的信号，还存在频率估计精度不高、算法稳定性差的问题，为此，提出一种ANF频率估计新方法.首先，分析现有ANF方法估计信号频率时存在精度低、速度慢、稳定性差的原因，提出一种新误差函数以提升ANF收敛速度；然后，根据ANF估计信号频率时偏差产生的机理，通过偏差补偿方式，降低噪声对ANF的影响，以获得近似无偏的频率估计结果，提高ANF频率估计精度，同时与离散卡尔曼滤波相结合，以改善算法的稳定性，并对该方法进行稳态条件下的性能分析；最后，给出了ANF频率估计结果，并讨论了ANF各参数对频率估计精度的影响，给出了具体计算结果.计算表明本文方法的有效性与正确性.

Abstract

With the limitation of the error function used in adaptive notch filter (ANF)

the convergence speed of the adaptive frequency estimation method is slow and the setting of initial iteration frequency value is also restrained.Especially for the signal whose frequency is close to 0 or

the frequency estimation accuracy is not satisfied and the stability of ANF is poor

so a new frequency estimation method of ANF based on new error function is proposed.Firstly

the reasons for low accuracy

slow convergence speed and poor stability of ANF frequency estimation methods are analyzed

and a new error function is proposed to improve the convergence speed;secondly

according to the reasons of the bias generated by ANF

a bias removing technique is adopted to improve the accuracy of the frequency estimation and the unbiased frequency estimation results are obtained

meanwhile the discrete kalman filtering is used to improve stability of ANF

then the performance analysis of ANF frequency estimation methods at steady state is also given;thirdly

the frequency estimation results of ANF are acquired.The impacts of the parameters on the accuracy of ANF for frequency estimation are discussed.Consequently

the calculated experiment results are provided to confirm the effectiveness and correctness of the algorithm.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Joint Estimation for Frequency and 2-D DOA in Nonuniform Noise

Hardware Implementation an Iterative Algorithm for Single-Frequency Estimation

Related Author

CHEN Guang-ju

DAI Jun-guang

WANG Bo

SUN Xiao-ying

LIU Guo-hong

DENG Zhen-miao

LIU Yu

ZHANG Gang-bing

Related Institution

电子科技大学测试技术及仪器研究所

College of Communication Engineering, Jilin University

南京航空航天大学信息科学与技术学院

Department of Electronic Engineering, University of Electronic Science and Technology of China

Key Laboratory of Satellite Communications,PLA University of Science and Technology

⁰