基于状态观测器的超混沌同步保密通信

The Hyperchaotic Synchronous Secret Communication Based on State Observer

基于状态观测器的思想,提出了解决超混沌系统同步问题的新方法,将该同步方法应用于保密通信。由状态观测器的构造可以看出该方法对原系统没有特殊的要求,不需要计算Lyapunov指数,避免了计算的复杂性;同时可以根据需要选取不同的加密函数,只要保证加密过程可逆即可。通过对超混沌Lorenz系统的分析和数值模拟研究结果显示该方法提高了保密性能,被加密的信息信号可以较好地被恢复,可以用于通信和信息处理方面。

A new method to solve the hyperchaotic synchronization problems based on state observer is proposed,applying the synchronization method to security communications.From the construction by the state observer can be seen that the method has no special requirements for the original system,did not need to calculate Lyapunov index,avoiding the complexity of computation;also can choose different encryption functions when required,as long as the encryption process was reversible.Through the analysis of hyperchaotic Lorenz system and numerical simulation results show that the method improves the performance of confidentiality,the information encrypted can better be recovered,this can be used for communications and information processing.