一种强噪声背景下微弱信号检测方法研究

针对常规单混沌振子微弱信号检测方法存在检测过程不稳定的现象,将混沌吸引子与双振子差分检测技术相结合,提出一种通过调整系统稳定混沌态来检测微弱信号的改进方法,同时利用双差分振子来判别系统混沌态向周期状态转变的临界值。通过仿真分析,该方法可有效防止误判且实时性较好,有利于在强噪声背景下的微弱信号检测,为工程实际应用提供了一种可借鉴的方法。

Research on weak signal detection method under the strong noise background

According to the instability phenomenon of the weak signal detection process based on the chaotic oscillator,an improved method is proposed,which detects the signal by adjusting the system in chaos.This method combines chaotic attractor and double differential oscillators detection,and decides the critical value from chaos to period by the double differential oscillators at the same time.As the simulation analysis has proved,this method can avoid misjudgment effectively and has a good real-time performance,which is beneficial to weak signal detection under the strong noise background,and it provides a referential method for practical engineering application.