摘要
利用Logistic映射与立方映射构造了一种混沌混合映射,对所产生的混合映射进行了Lyapunov指数及相关性等特性的分析,同时用此映射产生的混沌信号作为一种经过小波降噪改进构成的参数切换混沌通信系统所用的混沌载波,分析表明了此系统能很好地对所要传递的信息保密,同时系统的抗噪声性能也得到提高,最后对所构造的系统的安全性从相空间重构的角度进行了阐述,通过系统仿真验证了此种方案的可靠性.
A chaotic mixed map was constructed using logistic mapping, and cube mapping. Properties of the mixed map were analyzed by Lyapunov exponent and correlation. A chaotic communication system of shifting parameter was also constructed by means of wavelet de-noising based on the chaotic mixed map that produced chaotic carrier wave signals. Analysis indicates that the system keeps transmittal signals secret. Otherwise, the performance of resisting noise is promoted. Finally, the security of the constructed system is specified from a phase space reconstruction point of view. Results of system simulation prove the feasibility of the scheme.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2005年第5期663-667,共5页
Journal of Harbin Engineering University
基金
哈尔滨工程大学基础研究基金资助项目(HEUF04106)
关键词
混沌
混合映射
混沌通信
小波降噪
chaos
mixed map
chaotic communication
wavelet de-noising
