New time-frequency method of harmonic signal extraction in chaotic secure communication system

WANG Er-fu; WANG Dong-qing; DING Qun

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New time-frequency method of harmonic signal extraction in chaotic secure communication system

更新时间：2024-10-14

- New time-frequency method of harmonic signal extraction in chaotic secure communication system
- Vol. 32, Issue 12, Pages: 60-64(2011)
- 作者机构：
  
  黑龙江大学电子科学与技术博士后科研流动站
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.7;TN918.6
- Published：2011
- 稿件说明：
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WANG Er-fu, WANG Dong-qing, DING Qun. New time-frequency method of harmonic signal extraction in chaotic secure communication system[J]. 2011, 32(12): 60-64.
DOI：

WANG Er-fu, WANG Dong-qing, DING Qun. New time-frequency method of harmonic signal extraction in chaotic secure communication system[J]. 2011, 32(12): 60-64. DOI：

摘要

从混沌、噪声与谐波信号的时频特性分析入手

提出一种时—频域联合的两步化提取新方法

将经验模态分解与小波多尺度分解优势互补并相互融合。讨论了谐波信号的幅值、频率以及噪声能量对提取性能的影响

仿真实验验证了算法的有效性。

Abstract

after the time-frequency character analyses of the chaos

the noise and the harmonic signal

a new two-step extraction method of time-frequency was put forward

aimed to complement each other’s advantages and mutual fusion for wavelet multi-scale decomposition and empirical mode decomposition.The problem that the influence of the amplitude

frequency and noise energy on the extraction performance is also dissuced.Computer simulation verified that the method has high availability.

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