一种扰动混沌跳频码的新方法

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.

Novel Method to Perturb Chaotic FH Code

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.