6月23日9时43分,我国在西昌卫星发射中心用长征三号乙运载火箭,成功发射北斗系统第五十五颗导航卫星,暨北斗三号最后一颗全球组网卫星。
【知识点】
北斗卫星导航系统 中国高度重视北斗系统建设发展,自 20 世纪 80 年代开始探索适合国情的卫星导航系统发展道路,形成了“三步走”发展战略:2000 年年底,建成北斗一号系统,向中国提供服务;2017 年年底,建成北斗二号系统,向亚太地区提供服务 1994年,北斗卫星导航系统启动建设。20多年间,我国在西昌卫星发射中心共组织了44次北斗发射任务,利用长征三号甲系列运载火箭,先后将4颗北斗一号试验卫星 By now, 59 satellites, including the first four experimental ones, have been launched from Xichang on Long March 3Bs, some having since been put into retirement.
到目前为止,西昌卫星发射中心通过长征三号乙运载火箭共发射了59颗北斗卫星,其中包括四颗试验卫星,有些卫星已经退役。
There are 30 third-generation Beidou satellites in three types of orbit — 24 in medium-Earth orbits, three in inclined geosynchronous satellite orbits and three in geostationary orbits.
目前,在轨北斗三号卫星共有30颗,包括24颗中圆地球轨道卫星、3颗倾斜地球同步轨道卫星和3颗地球静止轨道卫星。
【相关词汇】
载人空间站 manned space station
助推火箭 booster rocket
发射中止系统 launch abort system
发射场 launch site
可重复使用运载火箭 reusable carrier rocket
运载火箭 carrier rocket
卫星导航 satellite navigation
参考
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