作　　者： ; ;

机构地区： 滨州学院物理与电子科学系

出　　处： 《计算机应用》 2010年第11期3134-3137,共4页

摘　　要： 为产生新的数字混沌伪随机序列,构造了一个新的混沌系统。利用理论分析和数值仿真的方法对系统的一些基本特性,如耗散性、平衡点、稳定性、Lyapunov指数、分叉进行了详细分析,通过设计一个模拟混沌电路验证了系统的混沌性。在此模拟电路的基础上,设计了一个由集成运放构成的电压比较器来量化这个模拟混沌信号,在实验中获得了数字伪随机序列。这种产生数字混沌序列的方法可应用于保密通信和信息加密之中。 In order to generate new chaotic pseudo-random sequences, a new chaotic system was constructed. Some basic properties, including dissipativity, equilibrium, stability, Lyapunov exponent spectrum and bifurcation of this chaotic system were analyzed in detail through theoretical analysis and numerical simulation. Chaotic behaviors of the system were confirmed by designing an analog chaotic circuit. Moreover, a voltage comparator consisting of integrated op-amps was designed to quantify the chaotic analog signal, and the digital pseudo-random sequences generated from the quantization circuit were experimentally obtained. The approach to generating digital chaotic sequence can be applied in secret communications and information encryption.

关 键 词： 混沌系统 伪随机序列 电路设计 量化

领　　域： [自动化与计算机技术] [自动化与计算机技术]