四阶变型蔡氏电路的混沌同步及其保密通信  

The Chaotic Synchronization and Secure Communication of a Four-Order Modified Chua's Circuit

作　　者：王玉芳[1] 

机构地区：[1]山东师范大学信息管理学院,山东济南250014

出　　处：《青岛大学学报（自然科学版）》2005年第2期76-80,共5页Journal of Qingdao University(Natural Science Edition)

摘　　要：在蔡氏电路的基础上,提出了一种四阶变型蔡氏电路。首先通过数值分析模拟了此电路的混沌特性,然后用驱动-响应法控制其实现了混沌同步,最后仿真实现了它在保密通信中的应用。模拟结果表明,此电路与蔡氏电路相比具有以下优点(1)此电路可以产生比蔡氏电路更加复杂的混沌行为,保持蔡氏电路部分参数不变,仅改变添加的电阻或电容值就能得到各种不同的混沌状态;(2)此电路比蔡氏电路更易实现混沌的控制和同步;(3)此电路是四维的,比蔡氏电路多一维,因而通信的保密性更强。Based on the Chua's circuit, a fourorder modified Chua's circuit is presented in this paper. Firstly, the chaotic characteristics of the circuits' are simulated from the aspect of numerical analysis. And then, the chaotic synchronization is realized in it by driveresponse method. Finally its application to secure communication is discussed. The result of simulation shows that the circuit can generate more complicated chaotic behavior than the Chua's circuit, and it is easier to control the circuit. And the circuit is fourdimensional, so it has better security.

关 键 词：变型蔡氏电路 保密通信 混沌同步 四阶 混沌特性 分析模拟 模拟结果 混沌行为 电路部分 混沌状态 电容值 保密性 控制 驱动 

分 类 号：TN710[电子电信—电路与系统] TN918