摘要
首先介绍了混沌检测原理和基于相关的双频信号检测方法,然后给出了检测信号模型,介绍了结合自相关和滤波预处理利用混沌振子对双频信号进行检测的新方法,分析了其检测原理。最后进行计算机仿真实验,仿真实验说明了该方法对微弱信号非常敏感,检测性能优于单纯混沌系统检测性能,同时进一步验证了所提方法具有强抗干扰等性能,有一定的实用价值。
In this paper, the detection theory and the detection of multi- frequency signals in telephone networks based on auto - correlation are introduced, the multi - frequency signal model is given. Auto - correlation and filter are combined with the chaotic system to form mixed measuring system. Its general measuring model is given in this paper. Finally, the computer simulations are given which show that mixed measuring system is very sensitive to weak signals and have better measuring performance than the chaotic system and the approach has the capability of anti- jamming.
出处
《现代电子技术》
2006年第18期144-146,共3页
Modern Electronics Technique
