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| Related Keyword：北斗 , 導航 , 系統 , 衛星 |
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| 「北斗」衛星導航系統精度或將超GPS ＠ 2011-12-28T09: |
| 新華網北京１２月２７日電新聞分析：北斗衛星導航距離國人有多遠？ 國新辦２７日舉行新聞發布會，介紹北斗衛星導航系統試運行服務和建設的有關情況。據介紹，北斗衛星導航系統已經發射了１０顆衛星，建成了基本系統。從２７日開始，將向中國及周邊地區提供連續的導航定位 |
| Keyword：北斗 導航 |
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| 北斗衛星導航系統正式運行後精度將達到10米 ＠ 2011-12-28T08: |
| 北斗衛星導航系統昨日起試運行，向中國及周邊地區提供連續的導航定位和授時服務。到明年底，系統基本建成後再提供正式運行服務，屆時精度將達到10米。 據北京晨報12月28日報導，北斗衛星導航系統昨日起試運行，向中國及周邊地區提供連續的導航定位和授時服務。 |
| Keyword：北斗 導航 系統 衛星 |
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