That is impossible, for two points to maintain LOS from
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送交者: steven 于 2011-01-27, 13:16:52:
回答: 2个卫星就可覆盖球体，但结合部处及附近效果不佳所以要多加 由 catfish 于 2011-01-27, 13:08:47:
everywhere on a globe. those two points would have to be infinitely far.
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