混沌序列及其在保密通信系统应用中的研究..docx

摘要非线性科学发展使得我们对世界认识发生了改变，其中混沌现象的发现更是给科学界带来了新的生命力。混沌现象是确定系统产生的类随机的、对初值敏感依赖、在有限范围内具有遍历性的一种运动现象，学者形象的称之为“确定的不确定运动”。混沌运动具有普遍意义，在现实生活中很多，所以应用也很广泛。混沌现象的频谱带宽、类噪声和非周期特性使得混沌可以很好地应用于保密通信中。混沌理论的提出及发展经历了几代科学家，保密通信领域研究的历史也是其中重要一部分，混沌应用在保密通信中具有时代意义和现实意义。本文阐述了混沌的定义和其自身的属性及其优秀的保密性，混沌信号在保密通信中进行了不断地实验和研究的内容；混沌保密通信离不开混沌同步，同步需要控制来进行；介绍混沌同步控制的几种理论方法，例如完全同步与广义同步；提到混沌在保密通信调制时的方法，涉及到密码学的基本知识，对密码学基础做了简单介绍；着重就驱动-响应同步方法原理进行描述，并列出了蔡氏电路的实现思路。最后，就混沌研究中未来还需解决的问题进行列举。关键字：混沌；保密通信；混沌同步AbstractThe development of nonlinear science has caused us to change the world cognition, and the discovery of chaos phenomenon brings new life to science field.Chaos is to determine the system to produce the class random, sensitive to initial value dependence, is a phenomenon of movement of the ergodicity in a limited range, the scholars said to determine the uncertain movement. Chaotic motion is of universal significance, and it is widely used in real life.The chaotic phenomena of the spectrum bandwidth, the class noise and the non periodic property make the chaos can be well applied in the secure communication.Chaos theory is proposed and development has gone through several generations of scientists and confidential communication research in the field of history is one of important part, the applications of chaos in secure communication has historical significance and practical significance. In this paper, the definition of chaos and its properties and good confidentiality, chaotic signal in secure communication were constantly experiments and research content; chaotic secure communication is inseparable from the chaos synchronization, synchronous control of; a theoretical method of chaotic synchronization control is introduced, such as fully synchronous and generalized synchronization; mention chaos in secure communication modulation method, the basic knowledge related to cryptography, on the basis of cryptography do simple introduction; focuses on drive response synchronization method and principle are described,