摘要
文章基于互相关检测方法和阻尼比扰动Duffing振子检测系统的检测原理,提出了互相关与阻尼比扰动Duffing振子检测系统相结合的一种新检测方法。文中利用新检测方法在白、色噪声背景下对方波信号进行检测,仿真结果表明新检测方法的信噪比明显优于单独采用互相关检测方法或阻尼比扰动的混沌检测方法的信噪比,分别为-43.4dB、-42.1dB和-40.5dB。
This article describes the detection principle of cross-correlation method and perturbation disturbing the damping rate of the duffing oscillator detection system,proposes a new detecting method combined cross-correlation with disturbing the damping rate of the duffing oscillator detection system.In the paper,square wave signal is detected under white /color noise background using the new method,its threshold of input SNR is significantly superior to cross-correlation method as well as disturbing the damping rate of the duffing oscillator detection method alone,and SNR is-43.4dB、-42.1dB and-40.5dB under white/colored noise background.
出处
《自动化与信息工程》
2011年第2期18-20,共3页
Automation & Information Engineering
