基于过零周期技术的混沌检测系统状态阈值判据研究

The Study on Judgement of Chaotic Threshold for Chaos-Based Detection System Based on the Crossover Technique

使用过零检测手段观察混沌系统在一定时间内的周期数,不同的周期数可以反映系统当时所处的状态,通过周期数判断系统是否进入到大尺度周期态,进而确定系统的混沌态和大尺度周期态的阈值,这在微弱信号检测中是非常关键的一部分。通过仿真可以看出此手段稳定可靠,并且相对传统判别方式具有计算量少的优点,非常适合与工程应用。

Observe the number of period of chaos-based weak signal diction system in certain time,the different number could reflect the different state of system.Determine whether the system get into the large-scale periodic state with the number of the cycles,and to determine the thresh old of chaos state and large scale periodic state,which is a key process in weak signal detection. Through the simulation we can see that this method is a stable and reliable,and compare with traditional discriminate methods it has the advantage of simple calculation which is very suited to engineering applications.