一种扰动混沌跳频码的新方法  

Novel Method to Perturb Chaotic FH Code

作　　者：党建亮[1] 夏江华 张家树[3] 

机构地区：[1]河南农业大学理学院 [2]四川航天职业技术学院 [3]西南交通大学

出　　处：《系统仿真学报》2008年第17期4672-4675,4680,共5页Journal of System Simulation

基　　金：武器装备预研基金项目(51430804QT2201);电子科技大学抗干扰重点实验基金项目(51341101104QT2201).

摘　　要：针对数字化混沌系统的有限精度效应及单一混沌跳频码相关性差、易被攻击的缺点,提出了利用细胞自动机产生伪随机序列来扰动混沌映射产生跳频码的方法,性能分析和数值仿真实验都表明这种方法极大的增加了系统抗干扰,抗截获的能力,尤其对序列的平衡性、汉明相关性,跳频间隔分布、抗预测性方面都有极大的提高,且结合细胞自动机自身特点,该结构便于硬件高速实现,具有广泛的应用前景。In respect that the precision-limited effect and the disadvantage of traditional chaotic sequence be easy to attack, an approach to generate chaotic FH code via perturbation of pseudo-random sequence generations based on CA was proposed. Theory analysis and simulations show that the proposed FH sequences have good balance properties and hamming correlation property, further more, they have large periodicity, wider frequency gap, good linear complexity and higher security. Moreover, because of the most potent of CA, this generator can be realized using digital circuit.

关 键 词：细胞自动机 混沌 跳频序列 有限精度效应 

分 类 号：TN914.41[电子电信—通信与信息系统]