单向耦合混沌同步及其在保密通信中的应用  

CHAOS SYNCHRONIZATION VIA UNIDIRECTIONAL COUPLING AND ITS APPLICATION TO SECURE COMMUNICATION

作　　者：王兴元[1] 古丽孜拉[1] 王明军[1] 

机构地区：[1]大连理工大学电子与信息工程学院,大连116024

出　　处：《动力学与控制学报》2008年第1期40-44,共5页Journal of Dynamics and Control

基　　金：国家自然科学基金(60573172);辽宁省教育厅高等学校科学技术研究项目(20040081)资助~~

摘　　要：采用单向耦合同步法,利用Lyapunov稳定性定理、全局同步法及最大Lyapunov指数法分别对Lorenz系统、变形耦合发电机系统及超混沌Chen系统的自同步进行了研究.为适用于混沌保密通信,使用单路信号实现了驱动系统与响应系统的同步,并给出将超混沌Chen系统的自同步用于混沌掩盖保密通信的具体例子.数值模拟验证了所给方案的有效性.This paper studied chaos synchronization via unidirectional coupling. The self- synchronization of Lorenz system, modified coupled dynamos system and hyperchaotic Chen system was studied by three methods： the Lyapunov stability method, the global synchronization method, and the numerical calculation of the largest Lyapunov exponent method. In regard to application to communication, we show that, by transmitting single signal, one can achieve synchronization of the drive system and the response system. An example of applying selfsynchronization of hyperchaotic Chen systems to chaotic masking secure communication was addressed. Simulation results show the effectiveness of the method.

关 键 词：耦合同步法 混沌同步 LYAPUNOV稳定性定理 全局同步法 最大LYAPUNOV指数 混沌掩盖 

分 类 号：TN918.6[电子电信—通信与信息系统]