GB/T 39414.4-2020北斗卫星导航系统空间信号接口规范第4部分:公开服务信号B3I标准
英文:Interface specification for signal in space of BeiDou navigation satellite system—Part 4: Open service signal B3I GB/...
英文:Interface specification for signal in space of BeiDou navigation satellite system—Part 4: Open service signal B3I GB/...