文章來源：北斗(dou)三(san)號 發布(bu)時間：2021-12-30
7月31日，北(bei)斗三(san)號全球(qiu)衛(wei)星導(dao)航系統建(jian)成(cheng)暨開(kai)通儀(yi)式(shi)在北(bei)京舉行。中(zhong)(zhong)共中(zhong)(zhong)央總(zong)書記、國家主席(xi)、中(zhong)(zhong)央軍(jun)委主席(xi)習近平出席(xi)儀(yi)式(shi)，宣布北(bei)斗三(san)號全球(qiu)衛(wei)星導(dao)航系統正式(shi)開(kai)通。
北斗三號衛(wei)星(xing)(xing)(xing)(xing)導(dao)航(hang)系(xi)統(tong)是(shi)我國首(shou)次(ci)建成(cheng)面向全(quan)(quan)球提供導(dao)航(hang)服(fu)務的(de)衛(wei)星(xing)(xing)(xing)(xing)系(xi)統(tong)，它由(you)地球中(zhong)圓(yuan)軌道(dao)(dao)(dao)(dao)衛(wei)星(xing)(xing)(xing)(xing)、傾斜地球同(tong)步軌道(dao)(dao)(dao)(dao)衛(wei)星(xing)(xing)(xing)(xing)和(he)地球靜止軌道(dao)(dao)(dao)(dao)衛(wei)星(xing)(xing)(xing)(xing)三種不同(tong)軌道(dao)(dao)(dao)(dao)的(de)衛(wei)星(xing)(xing)(xing)(xing)組成(cheng)，包括24顆(ke)(ke)地球中(zhong)圓(yuan)軌道(dao)(dao)(dao)(dao)衛(wei)星(xing)(xing)(xing)(xing)，3顆(ke)(ke)傾斜地球同(tong)步軌道(dao)(dao)(dao)(dao)衛(wei)星(xing)(xing)(xing)(xing)和(he)3顆(ke)(ke)地球靜止軌道(dao)(dao)(dao)(dao)衛(wei)星(xing)(xing)(xing)(xing)。目前，全(quan)(quan)球已有120余(yu)個國家(jia)和(he)地區使用北斗系(xi)統(tong)。
【責任編輯(ji)：趙藝涵(han)】
