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杨元喜院士：北斗系统开通，艰巨挑战还在后头
source link: https://tech.sina.com.cn/d/s/2020-08-10/doc-iivhuipn7807442.shtml
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来源：中国科学报作者：杨元喜7月31日，主席向全世界庄严宣布“北斗三号全球卫星导航系统正式开通”。历时26年，历经北斗一号、二号、三号的艰难建设过程，我国独立自主运行控制的国家时空基础设施正式建成，并投入运行。北斗导航定位系统不仅具有定位、
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