送交者: 历历 于 2011-01-27, 12:09:10:

回答: 都什么年头了中国还没这个. 只要有３颗间隔１２０度就可以全球通讯了 由 Amargi 于 2011-01-27, 11:55:24:

• 似乎至少要有４个卫星才能同步覆盖全球，　I could be wrong. (无内容) - 历历 (0 bytes) 2011-01-27, 12:19:02 (541687)
  • no. 4 is need for position, not communication. - steven (39 bytes) 2011-01-27, 12:20:48 (541691)
    • 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 (无内容) - catfish (0 bytes) 2011-01-27, 13:08:47 (541722)
      • That is impossible, for two points to maintain LOS from - steven (72 bytes) 2011-01-27, 13:16:52 (541724)
        • oops, "for two points to maintain LOS from each other and everywhere..." (无内容) - steven (0 bytes) 2011-01-27, 17:14:43 (541834)

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