摘要
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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第3期526-530,共5页
Acta Physica Sinica
基金
国家自然科学基金 (批准号 :69872 0 12 )
吉林省科技发展计划 (批准号 :2 0 0 2 0 62 6)资助的课题~~
关键词
微弱正弦信号
混沌检测
色噪声
信噪比
信号处理
weak sinusoidal signal
chaos detection
colored noise
signal-to-noise ratio