Chaos And Synchronization Of Spatiotemporal Chaotic Systems,

Based on the chaotic elementary theory, this paper researches on improving the quality of chaos synchronization and enhancing the capability of secret communication. First of all, we analyse and prove theoretically that parameter and noise have effects on the quality of chaos synchronization, and bring forward the method of calculating the effects. With this calculating method, we can easily know the degree of any parameter or information channel's effect on the quality of chaos synchronization, and then choose the right parts of an apparatus. Secondly, combining the methods of random impulse leading to synchronization and generalized synchronization we take out the conception of random impulse leading to generalized synchronization and design a high quality secret communication synchronization system. Because of the synchronization and information signals' random admixture, it is hard for stealers to steal the useful information. Thirdly, we extend further the method of composing generalized synchronization system, with the use of this method we can know the function between driving system and responding system when they are in the state of generalized synchronization. At last, applying sequential synchronization to spatial-temporal system, we design a sequential spatial-temporal system that can be synchronized, simultaneously present the way of calculating the range of parameter that enable the system synchronized. This system has not only the character of spatial-temporal chaotic system but generalized synchronized system, and offer good information carrier for secret communication. All above work mentioned in this paper provide essential theory for the use of chaos in secret communication.