海上中/高频数据通信解调技术  

The data exchange demodulation technology in maritime medium/high frequency band

作　　者：王化民[1] 

机构地区：[1]青岛远洋船员学院,山东青岛266071

出　　处：《舰船科学技术》2009年第3期108-111,142,共5页Ship Science and Technology

基　　金：交通部水土无线电通信技术和业务研究小组项目(T2)

摘　　要：在海上中/高频段引入数据通信技术已成为目前航运用户广泛的需求。海上中/高频段数据通信解调技术是关键技术之一,通过功能分析与仿真,研究了海上中/高频段数据通信解调技术的下变换、抽取、定时和频率恢复、频率偏移引起的衰减、串/并行数据转换、差分检码、解扰、循环冗余校验解码等技术。通过分析船/岸中/高频段数据通信试验,提出了频率选择技术方案。数据通信关键技术的研究将推动海上中/高频段数据通信技术的引进,有利于船岸通信设施的升级改造。The introduction of new data traffic technology on the maritime medium/high frequency （MF/HF） band has become an urgent demand in world shipping user. The data exchange demodulation is the key technology in maritime medium/high frequency band. This article makes studies on theory research and emulating, down-convert and decimation, timing and frequency recovery, degradation due to frequency offset, series to parallel conversion,differential detection, descrambler and cyclic redundancy check decoder ete of data exchange demodulation technology in maritime medium/high frequency band,exerts analyses on ship/shore medium/high frequency band traffic test and puts forth the frequency selection technology project. The research of data exchange technology will improve the introduction of data exchange in maritime medium/high frequency band and bring forth the updating and innovation of ship-shore communication facilities .

关 键 词：数据通信解调技术 下变换器 抽取 差分检波 解扰器 循环冗余校验解码器 

分 类 号：TN92[电子电信—通信与信息系统]