| Chaos is gradually recognized and used since the last century 90's when human discovered the phenomenon of it. Because chaotic signal has initial sensitivity, characteristic of broad bandwidth and like-noise, chaos has potential application in secure communication. With the further research of chaos, chaos synchronization becomes an advanced research field and has caused extensive attention in recent years. Chaos synchronization is an important part of chaos in secure communication How to realize the synchronization in chaos effectively is the key that chaos is applied in secure communication.This paper gives a more detailed introduction about the basic knowledge of chaos and chaos synchronization, studies the application of Chaos synchronization in secure communication, and its main contents are as follows: Firstly, through the description of chaos backdrop, that is, studies of chaotic processes, the definition, the character and the classification of chaos, and the research situation of chaos secure communication, and reveals the purpose and significance of the subject.Secondly, it studies the related knowledge of chaos synchronization, that is, the method to achieve chaos synchronization. At the same time, it analysis the key point about chaotic secure communication: theory principle of chaos secure communication, the advantage of chaos secure communication and its applications, the shortcomings to overcome in the future practice.Thirdly, the passage that aims at two different chaotic systems which is less used at the present offers the method that use observer to achieve synchronization. It also analysis the result of the simulation lab, discusses the feasibility of two different chaos systems using observer.Finally, apply the synchronization of two different chaotic systems into secure communication, that is, use chaotic signal as a carrier, transmit different information, and demodulate these information at the receiving end. Give the system block diagram and make lab of MATLAB again according to the actual application process, analysis the result of the simulation result. At last, summarize the role and significance of chaos in the secure communication. |
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