| 引用本文： |
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张 嵩,芮国胜,段鲁生,等.二进制调制信号Duffing振子检测方法及其抗噪声机理分析[J].电讯技术，2011，51（10）： - . [点击复制]
- ZHANG Song,RUI Guo-sheng,DUAN Lu-sheng,et al.Binary Modulated Signals Detection Methods Based on Duffing Oscillator and its Anti-noise Mechanism Analysis[J].，2011，51（10）： - . [点击复制]
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| 摘要: |
| 根据二进制调制信号的特点及Duffing振子微弱信号检测技术，研究了二进制调制信
号的Duffing振子检测原理，给出了2ASK、2FSK及BPSK调制信号的Duffing振子检测的方法和
流程。从Duffing振子与匹配滤波器处理待测信号的不同原理出发，研究了Duffing振子输入
前端信号信噪比提升的现象。指出二元通信信号的Duffing振子检测，无论调制方式如何，
其检测性能只与Duffing振子相变判别方式有关；并提出Duffing振子利用内置周期驱动力的
能量抵抗待测信号背景噪声的概念，从能量的角度分析了其抗噪声机理，解释了Duffing振
子对噪声“免疫”的原因所在。 |
| 关键词: 信号检测 混沌系统 Duffing振子 二进制调制 抗噪声 |
| DOI： |
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| 基金项目:泰山学者专项建设基金资助项目 |
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| Binary Modulated Signals Detection Methods Based on Duffing Oscillator and its Anti-noise Mechanism Analysis |
| ZHANG Song,RUI Guo-sheng,DUAN Lu-sheng,SUN Wen-jun,ZHANG Yang |
| (Signal and Information Processing Provincial Key Laboratory in Shandong,Naval
Aeronautical and Astronautical University, Yantai 264001,China;Unit 92095 of PLA, Taizhou 318050,China) |
| Abstract: |
| According to the characteristics of the binary modulated signals and th
e Duffing oscillator weak signal detection technique, the detection of binary
modulated signals using Duffing oscillator is studied. The detection methods and
processes
for 2ASK, 2FSK and BPSK signals are proposed. By comparison with the matched fil
t
er, a gain of signaltonoise ratio(SNR) in inputend of Duffing oscil
lat
or is defined and analysed to illustrate why the chaotic Duffing oscillator
can pull the clean signal out of the strong background noise from the perspecti
ve of energy. Conclusions are drawn that no matter how the modulation method is,
the detection performance is only related with the phase transition identificati
on metho
d, and the Duffing oscillator uses the power of the periodic driving force to re
sist the strong background noise. |
| Key words: signal detection chaotic system Duffing oscillator binary modulation anti noise |
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