海上高频电子邮件技术

Technology of electronic mail in the maritime high frequency band

海上高频电子邮件技术[1]是海上高频数字通信技术的重要部分,使用PACTOR-Ⅲ协议和现有海上中/高频无线电设备,经由全球链路网(GLN)与陆上用户进行通信。海上高频数字通信技术主要包括PACTOR-Ⅲ协议和T总线协议。对海上高频数字通信的带宽和传输速率、调制、编码和码率、振幅因数与发射机输出功率、数据包的结构、控制信号、信号特征等技术问题的分析,对海上高频段新通信技术的引进有非常重要的价值。

The technology of electronic mail in the maritime high frequency band is the important part of the technology of maritime HF digit traffic. It uses PACTOR-11I protocol and maritime MF/HF radioes in existence to carry out traffic with land user via global link network （GLN）. The technology of maritime HF digit traffic mostly includes PACTOR-III protocol and T-BUS protocol. It has very important value to introduce into maritime HF data traffic technology that the bandwidth and speed levels, modulation, coding and data rates, crest factor and transmitter output power, structure of packets and control signals, signal characteristics,T-BUS protocol and so on technique matter of maritime digit traffic areanalyzed.