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24 GPS satellites carry atomic clocks

  1. Jun 17, 2006 #1
    Quoted from Hyperphysics

    How do they know which of the points is the correct one? (see sentence in blod)

    Thank you!:approve:
  2. jcsd
  3. Jun 17, 2006 #2

    George Jones

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    Staff Emeritus
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    Gold Member

    I took a guess that one of the points doesn't lie on surface the Earth, and it seems that I was partially correct - see this tutorial.
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