文档介绍：混沌在保密通信系统中的应用研究
摘要
混沌是一种特殊复杂的非线性动力学行为,也是自然界普遍存在的现象,被认为是二十一世纪末期最重要的科学发展之一。有确定性非线性动力学系统产生的混沌具有许多奇异的特性,显示了混沌在保密通信等领域有着诱人的应用前景和重大的实用价值,混沌控制和混沌系统应用于保密通信的研究已成为信息科学界关注和研究的热点问题,本文在分析了已有研究成果的基础上,进行了以下方面的研究:
(a)首先介绍了混沌保密通信理论的产生与发展,以及混沌保密通信的意义。同时也介绍了混沌的一些基本知识,如混沌的定义、混沌的特性、混沌保密通信的方法和实用化存在的问题。
(b)混沌保密通信中,混沌同步是一项关键技术。本文针对驱动—响应式Chua电路混沌同步系统,提出混沌同步系统的自保持特性,解决了目前在混沌保密通信中,如何在同一信道中同时传输明文信息和混沌同步控制信号,为混沌同步在工程、通信领域的实际应用奠定了基础。
(c)针对Chua混沌电路,给出电路方程参数与元件值之间的关系,可以从元件数值判断电路是否产生混沌现象,并通过Multisim软件进行计算机仿真。
关键词:混沌,混沌同步,Chua电路,保密通信
Application Research on munication Based on Chaos
ABSTRACT
AS plex non-liner dynamics behavior, chaos is a general phenomenon in nature and is one of the most important discoveries in the 20th century later. Chaos, which is generated by non-liner dynamics system, possesses many unusual characteristics and these characteristics enable chaos to have a great charming prospect and practical value in munication field. The study of chaotic control and chaotic munication has e a hotspot problem of info-sci field, On the base of achieved research production, the following study aspects are carried through in this thesis:
(a) First of all, the article introduce the produce and development of the chaotic munication theory, then meaning of the chaotic munication. The dissertation discusses basic concepts of chaos, definition, feature, way of the chaotic munication and problems in practical.
(b) In the field of chaos munication, chaos synchronization is a key technology. In view of drive-response Chua’s circuit chaotic synchronization system, chaos synchronization self-maintenance is put forward in this thesis, it solves the present problem of how to stimulatingly transmit useful signal and chaos synchronization control signal in the same one channel, as a result, it establishes the groundwork of putting chaos into practical application of engineering munication field.
(c) In allusion to Chua chaos circuit, the relation of circuit equation’s parameters to elements’ val