北斗衛星導航是如何工作的？ Gps只要24顆衛星就能覆蓋全球，為何北斗需55顆？ 【看懂工作室】
Synopsis
2020年6月23日9時43分，伴隨著長征三號乙運載火箭的轟鳴，北斗三號最後一顆全球組網衛星點火升空。這是北斗組網的最後一顆 ...
![為什麼美國GPS只要24顆衛星，北斗要35顆，科學家給出答案，[科學探索]](https://i.ytimg.com/vi/X2GDsMHcG3M/hq720.jpg?sqp=-oaymwEcCNAFEJQDSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLDAU-EHSyaGeDpNcpPsJsc96FwMJQ)
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