一种通过异结构同步实现混沌保密通信新方法

A Novel Method of Realizing Chaotic Secure Communication by Synchronization of Different Structure

该文提出通过异结构混沌同步和参数调制实现保密通信的新方法。在发送端将信息信号调制到混沌系统的某个参数中,根据Lyapunov稳定性定理,构造合适的控制器,实现了异结构混沌系统的完全同步;在接受端采用非线型滤波器,使信息信号得以有效地恢复,实现信号安全保密传输。仿真结果表明,系统快速达到同步,经参数调制的信号能有效恢复,成功地实现保密通信,具有较强的保密性和实用性。

Based on two different chaotic systems synchronization and parameter modulation, a novel method of realizing chaotic secure communication is proposed in this paper. Information signals are used to modulate some parameter of a chaotic system in the sending terminal, based on Lyapunov stability theory, the proper controllers are designed to realize two different chaotic systems globally synchronization. The appropriate nonlinear filter is designed in the receiving terminal to make the information signals recover effectively, realizing the secure communication. The simulation results show that systems realize synchronization quickly, and the recovered signals are close to the information signals and it can realize secret communication successfully, having strong security and practicability.