摘要：混沌運動是一種非常有趣的非線性現象，在過去的三十年當中，對于混沌的研究逐步深入，在很多物理系統中如電子、機械、熱力學系統等都檢測到了混沌現象的存在。

混沌運動是一種確定性的非線性運動，它的運動軌跡非常復雜但又不完全隨機?；煦缧盘柕谋闅v性、非周期、連續寬帶動態頻譜等特性對保密通信非常有利體現出混沌理論在保密通信方面潛在的應用價值。

論文主要介紹了一般混沌系統的概念和特點，對混沌系統如何同步進行分析，并對混沌保密通信進行了介紹，對目前的混沌保密通信技術的研究狀況進行了綜述。本文主要利用MATLAB軟件中的ODE45函數來求解LORENZ系統混沌方程，并畫出圖像，觀察同步耦合時現象，并在同步耦合的基礎上進行保密通信。

關鍵詞：混沌系統；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