海上甚高频数据通信系统中的多径时延  

Multipath time delay in maritime VHF data exchange system

作　　者：陈亮[1] 金永兴[1] 胡勤友 汤可成 高万明 CHEN Liang JIN Yongxing HU Qinyou TANG Kecheng GAO Wanming(Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China Donghai Navigation Safety Administration MOT, Shanghai 200086, China)

机构地区：[1]上海海事大学商船学院,上海201306 [2]交通运输部东海航海保障中心,上海200086

出　　处：《上海海事大学学报》2016年第4期55-58,共4页Journal of Shanghai Maritime University

基　　金：交通运输部应用基础研究项目(2015329810030);上海市人才发展资金(201436)

摘　　要：为改进传统的海上甚高频(Very High Frequency,VHF)的模拟通信方式,实现海上通信现代化,针对国际灯塔与航标协会(International Association of Lighthouse Authorities,IALA)和国际海事组织(International Maritime Organization,IMO)提出的VHF数据通信系统(VHF Data Exchange System,VDES)研究计划,建立基于正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)的数据传输模型.海上无线信道的多径时延的确定是建立OFDM系统的关键,因此通过建立海上无线信道的多径传播模型分析和计算海上无线信道的多径时延.通过实验证明,该方法能够获得较低的误码率,有效实现海上VHF数据通信.To improve the analog communication mode of traditional maritime Very High Frequency （VHF） and realize maritime communication modernization, a data transmission model based on Orthogonal Frequency Division Multiplexing （OFDM） is established for the VHF Data Exchange System （VDES） research program which was proposed by International Association of Lighthouse Authorities （IALA） and International Maritime Organization （IMO）. Because the key to the OFDM system is the determination of the multipath time delay, a muhipath propagation model of maritime wireless channels is established to analyze and calculate the muhipath time delay of maritime wireless channels. The experiment shows that the method can effectively achieve maritime VHF data exchange with the lower bit error rate.

关 键 词：甚高频(VHF) e航海 海上无线通信 多径时延 VHF数据通信系统(VDES) 正交频分复用(OFDM) 

分 类 号：U666.14[交通运输工程—船舶及航道工程]