| 混沌保密通信系统中谐波信号提取的时—频域联合新方法 |
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| 引用本文： | 王尔馥,丁群. 混沌保密通信系统中谐波信号提取的时—频域联合新方法[J]. 通信学报, 2011, 32(12): 60-64 |
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| 作者姓名： | 王尔馥 丁群 |
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| 作者单位： | 黑龙江大学电子科学与技术博士后科研流动站,黑龙江哈尔滨,150080 |
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| 基金项目： | 国家自然科学基金资助项目，黑龙江大学青年基金资助项目 |
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| 摘 要： | 从混沌、噪声与谐波信号的时频特性分析入手,提出一种时一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.
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| 关 键 词： | 谐波信号 时频分析 提取 混沌 |
New time-frequency method of harmonic signal extraction in chaotic secure communication system |
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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]. Journal on Communications, 2011, 32(12): 60-64 |
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| Authors: | WANG Er-fu WANG Dong-qing DING Qun |
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| Affiliation: | WANG Er-fu,WANG Dong-qing,DING Qun (Electronic Science and technology Post-Doctoral Research Center,Heilongjiang University,Harbin 150080,China) |
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| 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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| Keywords: | harmonic signal time-frequency analysis extraction chaos |
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