色噪声背景下微弱正弦信号的混沌检测

Chaos-based weak sinusoidal signal detection approach under colored noise background

提出一种利用混沌在特定状态下对参数的敏感性来实现微弱正弦信号检测的新方案 .该方案可以有效地将深陷在色噪声背景中的微弱正弦信号检测出来 .给出了混沌检测的方法 ,分析了混沌检测中噪声对系统状态的影响 .仿真实验表明该混沌检测系统对小信号非常敏感 ,对任何零均值色噪声均具有极强的抑制能力 .

In this paper we consider a new weak signal detection scheme which uses the sensitivity of chaos to the parameters under a certain status to realize weak signal detection. This scheme can effectively extract the weak sinusoidal signal from the strong colored noise background. We present a chaos-based signal detection approach, analyze the influence of noise to the system status in the chaos detection process. Simulation experiments show that the chaos detection system is very sensitive to weak signal and have strong constraint to any colored noise with zero mean value.