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Study of an unified chaotic system synchronization and private communications 基于统一混沌系统的同步及其保密通信研究
Chaotic system synchronization 混沌同步
Pecora L M , Carroll T L. Synchronization in chaotic system[J]. Physical Review Letters, 1990,64 (6) :821. 戴栋马西奎.;基于间歇性参数自适应控制的混沌同步[J]
Controlling a Unified Chaotic System by Collocating the Lyapunov Exponents[J]. 引用该论文李国辉;雷云逸;徐得名;周世平.
Generalized synchronization chaotic system (GSCS) 广义同步混沌
Using nonlinear chaotic synchronization theory, the generalized chaotic synchronization between a class of topologically inequivalent chaotic systems is studied. 摘要利用非线性系统混沌同步理论，研究了一类拓扑不等价混沌系统之间的广义混沌同步。
The system uses the one dimension nonlinear functions to represent the digital message and uses the proper linear part to realize the system synchronization. 此保密通信系统用发送系统的不同的一维非线形函数值作为发送信号来代表不同的数字通信信息，而以选择恰当的收发系统的线性部分来实现系统同步。
It can improve the degradation of digital chaotic and diffusing speed of diffusion function through perturbating initial value of chaotic system with ciphertext. 该算法利用密文扰动混沌系统的初始值，既改善了数字混沌的退化，又能使扩散函数具有非常快的扩散速度。
Adding a suitable scalar controller to a class of topologically in equivalent chaotic systems, the chaotic synchronization between those topologically inequivalent chaotic systems can be realized. 对一类拓扑不等价混沌系统，通过设计一个合适标量控制器，可以实现不同混沌系统之间的广义同步。
It is difficult to achieve the synchronization for the master-slave chaotic systems with nonidentical parameters,so the uniform synchronization with a small error bound is discussed. 当主从耦合混沌系统的参数之间非恒同时;一般意义上的混沌同步难以实现;因此;讨论了其具有一定误差界的一致同步问题.
The characteristics of chaotic system are useful on measurement was observed.The chaotic system will bifurcate when the system parameters change a little. 混沌动力学系统具有初始条件的极端敏感性，当参数空间发生漂移时，系统的解空间将会出现很大的变化。
Moreover, the initial value of the chaotic system and the selection parameters of the compensation are used to improve the security of steganography system. 混沌系统初值和动态补偿参数可进一步提高系统的安全性。
The method of obtaining the scalar controller from topologically in-equivalent chaotic systems was established.The sufficient and realized necessary condition of chaotic synchronization was obtained. 得到了该标量控制器设计的一般方法，并得到了混沌同步的充分和必要条件。
With this controller,the first state variable of the controlled system in the strict-feedback form synchronizes with the scalar output of the given chaotic system. 严格反馈系统在所设计控制器的控制下,其第一个状态变量输出可以大范围渐近同步于给定的混沌系统的标量输出。
The chaotic sequences generated by spatiotemporal chaotic system model based on two dimensional coupled map lattice (CML) have good pseudorandom property. 基于二维耦合映象格子(CML)的时空混沌系统模型产生的混沌序列具有良好的伪随机特性。
So，a new image encryption method based on 3D chaotic system is proposed in this paper，which can not only increase secret key space，but also tone up ability to deciphering. 为此，提出了一种基于三维混沌系统的图像加密新方法，扩大了密钥空间，提高了加密系统的抗破译强度。
An approach, which forces a unified chaotic system to the expected point by analytically designing the controller to collocate the Lyapunov exponents, has been proposed. 解析设计控制器,通过配置相应的李雅谱诺夫指数,使统一混沌系统趋于预期点。
A numerical method is used to simulate the forking process of a new chaotic system which is simple in topology structure but complicated in dynamics behavior. 用数值方法模拟一个拓扑结构简单、动力学行为复杂的新型混沌系统分岔过程,并用连续控制法研究该系统的混沌控制和同步特性。
With strong real-time performance, the system synchronizes temperature monitoring with operational management for the unit. 该系统的最大特点是实时性强，实现了受热面温度的监测与机组运行管理同步。
On the other hand, we refer to synchronization of chaos as a process whereintwo chaotic systems adjust their motion to a common behavior, due to coupling or forcing. 另一方面,我们常常将混沌同步看作一个过程,在这个过程中,两个混沌系统能够通过耦合或者强迫力的作用,将各自不同的运动调节为一个共同的行为。