海上VHF无线通信传输损耗  

Transmission Loss in Maritime VHF Communications System

作　　者：陈亮[1] 金永兴[1] 胡勤友 汤可成 高万明 

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：《中国航海》2015年第3期1-4,共4页Navigation of China

基　　金：交通运输部应用基础研究(2015329810030);上海市人才发展资金(201436);上海海事大学优秀博士学位论文培育项目(2014bxlp003)

摘　　要：以海上甚高频(Very High Frequency,VHF)宽带数据通信网络为研究对象,结合海上通信环境的特有属性,利用电磁波相关理论,在合理选用和优化现有独立分散数学模型的基础上,设计完整而简洁的海上VHF通信传输损耗模型、确定有效可行的海上VHF通信传输损耗计算流程。对影响传输损耗的相关物理因素进行建模,给出相应的计算结果,并分析其与传输损耗间的关系。计算结果表明:随着传输距离增加,海上VHF通信传输损耗的增长幅度在不同的距离区段内具有不同的波动特征。计算结果有助于在具有较少的先验信息的条件下快捷地计算出海上VHF通信传输损耗,为提升海上无线通信质量、设计并建立海上VHF宽带数据通信系统提供技术支撑。The specific attributes of the maritime communications environment are studied from the angle of broadband Very High Frequency（VHF） communication and a concise comprehensive model and the calculation process of maritime VHF communication transmission loss is designed base on the combination of a selection of optimized existing seperate mathematical models. The effects of the physical factors which influence the transmission loss are simulated and the relation between the transmission loss and these factors is found. The calculation results show that the maritime VHF communication trans- mission loss presents different fluctuation features in different range sections. The calculation results can be used to estimate maritime VHF communication transmission loss when detailed environment data are not available.

关 键 词：船舶工程 海上VHF 海上通信 传输损耗 传输模型 

分 类 号：U675.75[交通运输工程—船舶及航道工程]