GB/T 39721-2021北斗地基增强系统基准站入网技术要求标准
英文:Technical requirement for reference station joining BeiDou ground-based augmentation system GB/T 39721-2021介绍: 国家标准《北...
英文:Technical requirement for reference station joining BeiDou ground-based augmentation system GB/T 39721-2021介绍: 国家标准《北...