适用高纬度地区GLONASS补强GPS讯号接收 GLONASS卫星位于中地球轨道（Medium Earth Orbit， MEO），距离地球平均海平面高度为19，100公里，比GPS卫星的轨道稍低一些。
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据此讨论了气候变化中地球轨道参数对辐射项的影响。
Accordingly, the influence of the earth's orbital parameters on the radiation term in the climatic change is also discussed.
他们希望GIOVE - B卫星可以在GIOVE - A卫星的基础上，完善并且提供更多的数据。GIOVE - A卫星是欧洲第一颗在中地球轨道高度运行的卫星。
It is hoped that GIOVE-B will provide data to complement and expand upon results from GIOVE-A, which was the first European satellite to operate in MEO.
中地球轨道是全球定位系统（美国）、格洛纳斯系统（俄罗斯）和伽利略定位系统（欧洲）等导航卫星运行的轨道。另外，俄罗斯正在关闭国境内全球定位系统的地面工作站。
It might be interesting to know that MEO is the orbit of GPS, Glonass and Galileo satellites. It is also interesting that Russia is shutting down their GPS stations.
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