一种保密通信系统混沌信号产生器的设计及仿真

提出了一种发送端与接收端混沌信号产生器“不对称”的保密通信方案．基于误差反馈同步原理，发送端与接收端各自设计带有不同特定辅助网络的混沌信号产生器；接收端获取了发送端混沌系统的参数、特定辅助网络的结构和传送信号的构成情况，才可以重构混沌系统并设计相应的辅助网络，从收到的信息中提取用于加密的混沌信号，解调出信息．仿真结果表明，发送端与接收端特定辅助网络的设计加强了保密通信系统的保密性，且系统具有较好的噪声鲁棒性。

Design and Simulation of a Chaotic Signal Generator for Secure Communication System

A secure communication scheme based on the asymmetric structure of chaotic signal generators of the transmitter and the receiver is proposed. On the basis of the error-feedback synchronization theory, chaotic signal generators with different special auxiliary networks are respectively designed for both the transmitter and the recei-ver. Only by knowing the parameters of the original chaotic system, the constitutions of the special auxiliary network and the transmitted signal, the receiver can reconstruct the chaotic system, design corresponding auxiliary network, abstract chaotic signals for the encryption and obtain the demodulation message. The simulated results show that the special auxiliary networks in the receiver and the transmitter enhance the security of the secure communication system, thus resulting in excellent noise robustness of the system.