中地球轨道

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该图片是对地球静止轨道、GPS、格洛纳斯、北斗导航系统、伽利略定位系統、国际空间站、哈勃望远镜和铱卫星的环绕轨道的比较，并附上了范艾伦辐射带和地球。

中地球轨道（Medium Earth Orbit, MEO）也叫中圆轨道，是位于低地球轨道（2,000公里（1,243英里））和地球静止轨道（35,786公里（22,236英里））之间的人造卫星运行轨道。

运行于中地球轨道的卫星大都是导航卫星，例如GPS（20,200公里（12,552英里））, 格洛纳斯系统（19,100公里（11,868英里）），北斗卫星导航系统（21,500公里（13,359英里））以及伽利略定位系统（23,222公里（14,429英里））。部分跨越南北极的通信卫星也使用中地球轨道。[1]

中地球轨道的卫星运转周期在2至24小时之间，但大部分在12小时左右[2]。最早的通信卫星“Telstar”也是使用的这条轨道。[3]

参见

参考来源

  1. ^ 网页连接已失效. [2007-10-21]. （原始内容存档于2006-10-17）. 
  2. ^ Definitions of geocentric orbits from the Goddard Space Flight Center. [2017-01-16]. （原始内容存档于2010-05-27）. 
  3. ^ Communication Satellites. [2007-10-21]. （原始内容存档于2012-11-20）. 

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