发明授权
US07406311B2 Method and apparatus for selectively operating satellites in tundra orbits 失效
用于选择性地操作苔原轨道卫星的方法和装置

Method and apparatus for selectively operating satellites in tundra orbits
摘要:
A satellite system provides geosynchronous satellites in elliptical orbits in respective elliptical orbital planes separated by 120 degrees. The satellites traverse a common figure-eight ground track comprising northern and southern loops. The satellites are controllably switched to operate the satellite currently traversing the northern loop to deliver a selected signal (e.g., a selected frequency signal) to satellite receivers.
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