| 基于小波包分解和样本熵的电磁干扰分析方法 |
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| 引用本文： | 张涛,任志良,孙常存,李耀波.基于小波包分解和样本熵的电磁干扰分析方法[J].海军工程大学学报,2011(5):82-87. |
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| 作者姓名： | 张涛 任志良 孙常存 李耀波 |
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| 作者单位： | 海军工程大学兵器工程系;92538部队; |
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| 摘 要： | 为了定量分析不同状态下电磁环境的变化,并有效提取电磁环境变化的干扰特征,提出了基于小波包分解和样本熵的电磁干扰分析方法.首先,时电磁环境的样本信号进行小波包分解,然后分别计算分解后备频带信号的能量谱系数和样本熵,通过能量谱系数和样本熵这两个指标的对比,综合判断电磁环境是否发生变化.仿真分析表明:样本熵可以弥补能量谱系数...
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| 关 键 词： | 电磁干扰 电磁环境 小波包分解 样本熵 能量谱系数 |
Analytical method of electromagnetic interference based on wavelet packet decomposition and sample entropy |
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| ZHANG Tao,REN Zhi-liang,SUN Chang-cun,LI Yao-bo.Analytical method of electromagnetic interference based on wavelet packet decomposition and sample entropy[J].Journal of Naval University of Engineering,2011(5):82-87. |
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| Authors: | ZHANG Tao REN Zhi-liang SUN Chang-cun LI Yao-bo |
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| Institution: | ZHANG Tao1,REN Zhi-liang1,SUN Chang-cun1,LI Yao-bo2(1.Dept.of Weaponry Engineering,Naval Univ.of Engineering,Wuhan 430033,China,2.Unit No.92538,Dalian 116041,China) |
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| Abstract: | To analyze the change of electromagnetic environment in different states quantitatively and extract its interference feature information effectively,an analytical method of electromagnetic interference is proposed based on the wavelet packet decomposition and sample entropy(SampEn).Firstly,the sample signals of electromagnetic environment were decomposed by wavelet packet.Then,the energy spectrum coefficient and SampEn of signals at each frequency band were computed.The two indexes in different working stat... |
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| Keywords: | electromagnetic interference electromagnetic environment wavelet packet decomposition sample entropy(SampEn) energy spectrum coefficient |
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