混沌系统的对偶同步及其在信号传输中的应用  

Dual Synchronization of Chaotic Systems with Application to Signal Transformation

作　　者：杨涛[1] 张斌[1] 邵惠鹤[1] 

机构地区：[1]上海交通大学自动化系,上海200030

出　　处：《高技术通讯》2002年第4期22-26,共5页Chinese High Technology Letters

基　　金：国家 973重点基础研究发展规划 (G1998030 415 )资助项目

摘　　要：把误差反馈和参数自适应调节相结合 ,根据同步误差情况对信道噪声进行补偿 ,实现了两个完全独立的连续超混沌系统的对偶同步。以Lorenz系统和R ssler系统为例在理想和噪声环境中进行仿真 ,对偶同步效果良好。在此基础上 ,利用参数调制思想 ,结合参数估计 ,实现了多路信息传输。Interlacing error feedback with parameter adaptive adjust, and compensating the channel noise according to the synchronizing error, a new approach is proposed to guarantee the dual synchronization of two sets of independent continuous-time hyper chaotic systems in the ideal and noisy environment. Numerical simulations are carried out to show the effectiveness of this idea with its use to the Lorenz systems and Rssler systems. Based on the dual synchronization, the parameter-modulation method is used to send analog as well as digital information, and a filter is used to recover these transmitted information, with a perfect recovery. This is showed in the numerical simulations too.

关 键 词：混沌系统 信号传输 对偶同步 混沌保密通信 参数调制 参数估计 噪声补偿 

分 类 号：TN911[电子电信—通信与信息系统]