一种迭代级联混沌扩频序列及其性能分析  

Performance analysis of chaotic spread spectrum based on iterated concatenated map

作　　者：于一丁[1] 王永川[1] 王长龙[1] 

机构地区：[1]军械工程学院无人机工程系,河北石家庄050003

出　　处：《电子技术应用》2016年第7期95-98,共4页Application of Electronic Technique

基　　金：装备预研基金项目(9140A25031314JB34004)

摘　　要：针对单级混沌映射结构简单、复杂度低的特点,将改进型Logistic混沌映射和Chebyshev混沌映射通过迭代级联构造出一种新型混沌映射,有效扩展了混沌系统的密钥空间。基于提出的新型混沌映射通过数字量化处理得到混沌扩频序列,对其性能进行仿真分析并与传统单级映射混沌序列进行比较,结果表明该序列拥有良好的相关性和平衡性,序列复杂度更高,抗干扰能力更强。Aiming at these problems of simple structure and low complexity of the single-stage chaos map,a new chaos map is proposed based on the iterated concatenation of the modified Logistic map and Chebyshev map,which efficiently expands the secret key space of the chaos system.A new chaotic spread spectrum is acquired by the digital quantization of the new chaos map.By analysing and comparing the properties of the new chaotic spread spectrum with traditional Single-stage chaos sprectrum,it is proved that this new chaotic spread spectrum has a good performance of correlation and balance,better performance of complexity and anti-jamming.

关 键 词：混沌 扩频序列 级联映射 相关性 

分 类 号：TN914[电子电信—通信与信息系统]