摘要：混沌运动是一种非常有趣的非线性现象，在过去的三十年当中，对于混沌的研究逐步深入，在很多物理系统中如电子、机械、热力学系统等都检测到了混沌现象的存在。
混沌运动是一种确定性的非线性运动，它的运动轨迹非常复杂但又不完全随机。混沌信号的遍历性、非周期、连续宽带动态频谱等特性对保密通信非常有利体现出混沌理论在保密通信方面潜在的应用价值。
论文主要介绍了一般混沌系统的概念和特点，对混沌系统如何同步进行分析，并对混沌保密通信进行了介绍，对目前的混沌保密通信技术的研究状况进行了综述。本文主要利用MATLAB软件中的ODE45函数来求解LORENZ系统混沌方程，并画出图像，观察同步耦合时现象，并在同步耦合的基础上进行保密通信。
关键词：混沌系统；同步；保密通信
Abstract: The chaotic motion is a very interesting nonlinear phenomenon, which in the past three decades, the gradual deepening of the study of chaos in many physical systems such as electronic, mechanical, thermodynamic system and so detected the presence of chaotic phenomena.
The chaotic motion of a deterministic non-linear movement, its trajectory is very complex, but not completely random. Ergodicity of the chaotic signal, non-periodic, continuous broadband dynamic spectrum characteristics of a confidential communication very beneficial to reflect the potential value of chaos theory in secure communication.
The paper introduces the concepts and features of chaotic systems in general, to analyze how to synchronize chaotic systems, chaos and secure communication, the current chaotic secure communication technology status were reviewed. In this paper, to solve the equations of of LORENZ system chaotic ODE45 function in the MATLAB software, and draw images to observe the phenomenon of synchronous coupling, and synchronous coupling on the basis of confidential communication.
Key words: chaotic systems； synchronization； secure communication
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