基于复合离散混沌系统的编码信号生成方案  

Scheme of Encoding Signal Based on Composite Discrete Chaotic System

作　　者：刘诗华[1] 高晟耀[1] 王德石[1] 

机构地区：[1]海军工程大学兵器工程系,武汉430033

出　　处：《数据采集与处理》2008年第B09期58-61,共4页Journal of Data Acquisition and Processing

基　　金：国家自然科学基金(10272113)资助项目

摘　　要：分析了复合离散混沌系统,针对该混沌系统研究了一种伪随机序列的生成方法。利用上述方法生成复合离散混沌序列,对正弦波进行调制,得到复合离散混沌二相编码信号。在大量仿真的基础上,对该信号的自相关性、频谱和模糊函数等性能进行了分析,并给出了相应的仿真结果。仿真结果表明,该信号具有优良的距离和速度分辨率,抗干扰能力较强。The composite discrete chaotic system is analyzed. A generation method of pseudorandom sequence based on the chaotic system is studied. Composite discrete chaotic sequence is generated using the method, the sine wave is modulated by the generated chaotic sequence and the composite discrete chaotic bi-phase encoding signal is obtained. On the basis of simulations, the performances of auto-correlation, spectra and ambiguity function of the signal are analyzed. Simulation results show that the resolutions of the signal in both range and velocity domains are good, and its anti-interference performance is fine.

关 键 词：复合离散混沌系统 伪随机序列 二相编码信号 模糊函数 

分 类 号：TN957[电子电信—信号与信息处理]