基于广义函数投影同步的混沌保密通信研究  

Chaos Secure Communication Research Based on Generalized Function Projective Synchronization

作　　者：方洁[1] 张昭晗[2] 邓玮[1] 

机构地区：[1]郑州轻工业学院电气信息工程学院,河南郑州450002 [2]周口职业技术学院机电系,河南周口466001

出　　处：《计算机仿真》2012年第7期168-171,178,共5页Computer Simulation

基　　金：国家自然科学基金(90716028);国家自然科学基金(61070238)

摘　　要：针对已有的混沌广义函数投影同步保密通信的局限性,研究了基于广义函数投影同步和参数调制的混沌保密通信问题。把混沌参数作为一个状态变量,将信息信号经过函数变换后调制在混沌系统的不确定参数中,通过构造参数自适应率与非线性控制器,实现混沌系统的广义函数投影同步与参数估计,在接收端通过参数辨识和反函数变换实现信息信号的解调。以电阻电容电感分流的约瑟夫森结(RCLSJJ)混沌系统为例进行数值仿真,仿真结果表明改进方法可成功辨识出系统的未知参数,从而快速有效的恢复出调制在参数中的信息信号。To solve the limitation of secure communication based on chaotic generalized function projective syn- chronization, the secure communication scheme based on generalized function projective synchronization and parame- ter modulation was investigated in this paper. Information signals were used to modulate uncertain parameters of a chaotic system. Based on Lyapunov stability theory and adaptive control method, nonlinear feedback controller and the parameters update law were designed to realize generalized function projective synchronization. The information signals were recoverd by parameter identification and inverse function transformation in the receiving terminal. Numerical simulations based on RCLSJ chaotic system demonstrated that the method can successfully identify the un- known parameters and recover the information signals.

关 键 词：广义函数投影同步 参数调制 混沌系统 保密通信 自适应 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN918[自动化与计算机技术—控制科学与工程]