码分多址在水下定位中的应用  

CDMA in underwater positioning of application

作　　者：吴黎慧[1] 蒲南江[1] 高磊[1] 胡洋[1] 

机构地区：[1]中北大学信息与通信工程学院,山西太原030051

出　　处：《电子测试》2011年第8期100-103,共4页Electronic Test

摘　　要：水下定位是一个通信的过程,其成败取决于水声定位信号的优劣,即该信号的稳定性和获取技术。介绍了一种基于码分多址的水下定位信号技术。该设计简单,较大地降低了水下通信的功耗,提高了功率利用率,较容易地实现了定位信息的发射,可靠性高,能够很方便地应用到多个基站。本文通过基于FPGA芯片实现分频电路,M序列、正弦波产生电路,给出了整个程序设计的流程图。最后通过实验证明:该电路设计简单,工作稳定,多个节点的位置信息能够简单有效的传输,能够达到工程设计的基本要求。Underwater positioning is a communication process and its success depends on acoustic positioning signal quality,namely the signal stability and access to technology.This paper introduces a kind of underwater positioning signal based on code division multiple access （cdma） technology.This design is simple,larger reduced underwater communication power consumption,higher power utilization,more easily realized the position information of emission,high reliability,and can be easily applied to multiple base station.This paper based on FPGA realizing separate frequency circuit chip,M sequence,sine wave produces circuit are given,and the whole programming flowchart.At last,through experiment shows that the circuit is simple in design,stable work,the position information of multiple nodes can be simple and effective transmission,can achieve the engineering design of the basic requirements.

关 键 词：水下定位 码分多址 FPGA M序列 

分 类 号：TN929.533[电子电信—通信与信息系统]