基于北斗区域短报文通信的全球海上遇险和安全系统服务技术规范 第1部分：总体要求
Technical specification for global maritime distress and safety system service based on BDS regional short message communication—Part 1: General requirement
2024-05-28
GB/T 44085.2-2024
基于北斗区域短报文通信的全球海上遇险和安全系统服务技术规范 第2部分：船舶地球站
Technical specification for global maritime distress and safety system service based on BDS regional short message communication—Part 2：Ship earth station