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应用科学学报 ›› 2010, Vol. 28 ›› Issue (2): 115-122.

• 通信工程 • 上一篇    下一篇

超混沌系统滑模自适应同步控制及其在保密通信中的应用

  

  1. 1. 南京航空航天大学自动化学院，南京210016
    2. 南京森林公安高等专科学校侦查系，南京210042
  • 收稿日期:2009-06-21 修回日期:2009-12-08 出版日期:2010-03-30 发布日期:2010-03-30
  • 作者简介:梅蓉，讲师，博士生，研究方向：混沌保密通信，E-mail: meirongnuaa@163.com; 吴庆宪，教授，博导，研究方向：非线性智能控制，E-mail: wuqingxian@nuaa.edu.cn; 姜长生，教授，博导，研究方向：非线性智能控制，E-mail: jiangcs@nuaa.edu.cn

Sliding Mode Adaptive Synchronization Control of Hyperchaotic System and Its Application in Secure Communication

  1. 1. Automation College, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    2. Criminal Investigation Department, Nanjing Forest Police College, Nanjing 210042, China
  • Received:2009-06-21 Revised:2009-12-08 Online:2010-03-30 Published:2010-03-30
  • Supported by:

    国家自然科学基金(No.90716028)；江苏省自然科学基金(No.SBK2008390)资助

PDF

1685

被引次数

6

摘要：

由于混沌系统具有内禀随机性、初值敏感性和宽频谱等特性，利用混沌系统实施保密通信，成为提高信息安全的有效手段. 为了进一步改进通信保密性能以及抗干扰能力，该文基于经典的Lorenz系统设计了部分参数时变的四维超混沌系统. 将明文信号参与该混沌系统的运算，采用滑模自适应控制方法设计单维信号控制，实现了同结构超混沌系统同步.在达到同步的情况下，接收端能有效地恢复出隐藏信号.数字仿真表明这种同结构超混沌系统滑模自适应同步控制是有效的.

关键词: 保密通信, 超混沌系统, Lorenz系统, 滑模控制, 自适应同步

Abstract:

Due to their intrinsic randomness, sensitivity to initial values and broadband spectrum, chaotic systems have been used to implement secure communication. To improve security and enhance anti-interference ability, a four-dimensional hyperchaotic system with unknown parameter is designed based on the classical Lorenz chaotic system. A single signal control is proposed based on sliding mode adaptive control to synchronize hyperchaotic systems with the same structure. When synchronization is achieved, the hidden signal can be restored effectively at the receiving end. Numeric simulation shows effectiveness of the proposed technique.

Key words: secure communication, hyperchaotic system, Lorenz system, sliding mode control, adaptive synchronization

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