基于变参量的混沌同步及在通信中的应用  

Chaotic synchronization with parameter disturbance and its application in communication

作　　者：倪姬娜[1] 李德敏[1] 余雯静[1] 曾旎[1] 

机构地区：[1]东华大学信息科学与技术学院通信系,上海松江201620

出　　处：《微计算机信息》2008年第15期139-140,271,共3页Control & Automation

基　　金：国家自然科学基金(70271001);中国博士后基金(2002032191);上海市科委重点项目(05dz05036)

摘　　要：本文提出了一种同构混沌系统的同步方法,对于一个由未知动态系统产生的任意信号,能采用两个同构混沌系统来进行有效的同步,并可对信号进行保存。采用非线性系统观测器,考虑变参数和噪声的影响,给出了混沌同步和安全通信的简单有效的方法,并且分析了系统的稳定性,对Rossler系统的分析和仿真研究表明该方法具有同步速度快,精度高等优良性能。An identical chaotic systems synchronization methodology was studied in this paper. An arbitrary signal, generated by an unknown dynamical system, can be synchronized and stored by the identical chaotic systems. By constructing an observer of chaotic system, considering the parameter disturbance and noise, the method that could be used for both chaos synchronization and secure communication was given, and furthermore its stability was analyzed. Numerical examples illustrated the accuracy and high performance of the proposed method for chaos synchronization and secure communication.

关 键 词：混沌同步 混沌系统 状态观测器 安全通信 

分 类 号：TN918[电子电信—通信与信息系统]