| 自相关级联混沌振子法实现随相弱正弦信号的检测 |
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| 引用本文： | 李健,周激流,孙涛,任磊磊.自相关级联混沌振子法实现随相弱正弦信号的检测[J].四川大学学报(工程科学版),2010,42(1):191-195. |
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| 作者姓名： | 李健 周激流 孙涛 任磊磊 |
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| 作者单位： | 1. 四川大学电子信息学院,四川成都610064;西南交通大学信息编码与传输四川省重点实验室,四川成都610031
2. 四川大学电子信息学院,四川成都,610064 |
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| 基金项目： | 四川省科技厅应用基础项目(2008JY0048); 西南交通大学信息编码与传输四川省重点实验室开放研究基金资助项目(LF08007) |
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| 摘 要： | 为了全面考查混沌振子系统的检测能力,改善系统的检测性能并实现随机相位微弱正弦信号的检测,通过Monte-Carlo仿真得到了系统的检测性能,提出了自相关与混沌振子相结合的检测方法.首先对接收信号进行自相关,故意失掉相位信息并抑制部分噪声,从而使自相关结果即送入混沌振子的信号变为了信噪比得到增强的0初相正弦信号,采用一个方程就可实现检测.避免了方程组的方法,不仅降低了检测的复杂度,也提高了检测性能,Monte-Carlo仿真证明了联合检测系统提高了对微弱信号的检测能力.
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| 关 键 词： | 自相关 混沌振子 正弦信号检测 |
| 收稿时间： | 1/4/2009 12:00:00 AM |
| 修稿时间： | 2009/5/25 0:00:00 |
Detection of Phase Randomly Distributed Weak Sinusoidal Signal Based on Autocorrelation Joint with Chaotic Oscillator Method |
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| Li Jian,Zhou Jiliu,Sun Tao and Ren Leilei.Detection of Phase Randomly Distributed Weak Sinusoidal Signal Based on Autocorrelation Joint with Chaotic Oscillator Method[J].Journal of Sichuan University (Engineering Science Edition),2010,42(1):191-195. |
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| Authors: | Li Jian Zhou Jiliu Sun Tao and Ren Leilei |
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| Affiliation: | LI Jian1,2,ZHOU Ji-liu1,SUN Tao1,REN Lei-lei1(1.School of Electronics , Info.Eng.,Sichuan Univ.,Chengdu 610064,China,2.Key Lab.of Info.Coding , Transmission,Southwest Jiaotong Univ.,Chengdu 610031,China) |
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| Abstract: | In order to check the detection ability of chaotic oscillator system thoroughly,improve the detection performance and realize the detection of phase randomly distributed weak sinusoidal signal,the detection performance was studied by Monte-Carlo simulation,and the autocorrelation joint with chaotic oscillator detection method was proposed.The autocorrelation was performed to the received signal in order to lose the phase information and suppress a portion of noise,and the result of the autocorrelation was c... |
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| Keywords: | autocorrelation chaotic oscillator the detection of sinusoidal signal |
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