摘要
基于稳定性理论,用非线性反馈的方法构造一个同步系统.用Lyapunov方法从理论上证明误差系统的零点稳定性,用Fortran程序进行了数值仿真,给出系统同步误差图,结果表明驱动系统和响应系统能够很好地达到同步.对系统的第一个变量x(t)进行扰动,数值仿真表明在扰动下系统仍能很好地同步,说明同步系统具有抗干扰性.然后把系统应用到保密通讯中,信息信号m(t)和混沌变量x(t)相加成为混沌传输信号s(t),在接收端信息信号被有效复原,数值仿真结果表明通信方案是可行有效的.
The nonlinear feedback synchronization approach for the chaotic CHEN system is presented based on the stability theory. The validity of this synchronous method is proved theoretically with Lyapunov second method. A simulation is conducted with Fortran to prove synchronous validity and anti-interference ability of the method. Finally the method is applied to secret communication. The simulation results indicate that the communication scheme is feasible and effective.
出处
《湖北大学学报（自然科学版）》
CAS
北大核心
2008年第3期226-229,共4页
Journal of Hubei University：Natural Science
基金
国家自然科学基金(10602020)资助项目
关键词
CHEN系统
同步
保密通讯
数值仿真
信息信号
CHEN system
synchronization
secret communication
value simulation
information signal
