基于混沌序列的水声差分跳频G函数仿真  

Simulation of G Function for Underwater Acoustic DFH Communication System Based on Chaotic Sequence

作　　者：刘友永[1] 梁国龙[1] 李新欣[1] 

机构地区：[1]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001

出　　处：《计算机仿真》2009年第7期16-18,57,共4页Computer Simulation

基　　金：水声技术国防科技重点实验室基金(51445050204CB0102)

摘　　要：基于保密通信、组网通信的考虑,提出将差分跳频技术应用于水声通信并给出了系统模型,可以克服传统跳频通信的数据率不高和同步困难等不足。从CHESS电台G函数产生的跳频图案的缺点出发,利用混沌序列构建出新的G函数,将混沌序列按照一定的方法分割,再将数据信息调制在随机序列上用以产生跳频号,对新旧G函数产生的跳频图案进行了性能检验和仿真分析。结果表明,新的G函数产生的跳频序列有良好的均匀性、随机性,应用于水下通信可以更好的抗水下干扰和多途,实现保密通信和组网要求。In this paper, a method of differential frequency hopping which can overcame the disadvantage of data rate and synchronization in traditional frequency hopping communication is used for underwater acoustic communication regarding the safety and reliability. In view of the disadvantage of the CHESS radio G function, a system model is proposed and a new design method for G function is presented based on chaotic sequence. New G function＇ s frequency hopping pattern is analyzed and tested using three different methods of sequence segmentation and data modulation. The results show that frequency hopping sequence produced by new G function has good uniformity and randomicity and has the advantage of conquering underwater interference and multipath, so it can be applied in underwater communication.

关 键 词：混沌序列 差分跳频 水声通信 

分 类 号：TB567[交通运输工程—水声工程]