混沌保密系统中信号检测的阈值判定

Threshold Determination of Signal Detection in Chaotic Secure System

目前,对于混沌保密光通信方法的研究早已引起了各国科学家的高度重视,混沌领域将成为一个极具开发价值的领域,而进行阈值判定成为对系统中混沌信号的检测的关键。在本论文中,我们将待测的微弱周期信号作为混沌系统的一种周期扰动,利用周期扰动抑制混沌运动的特性,使混沌系统实现从混沌临界态向大尺度周期态的转变,并通过仿真实现了混沌临界态向大尺度周期态的转变。

Currently, chaotic secure methods of optical communication has attracted scientists from various countries great attention,chaos areas will become a field of great value, While the threshold determination become crucial for chaotic signal detection system. In this paper, we will test the weak periodic signal as a perturbation of chaotic systems, the use of periodic disturbance rejection characteristics of chaotic motion, so that the critical chaotic system from a chaotic state to the large scale periodic state transition, and by simulation we achieve a chaotic state to the large-scale periodic critical state changes.