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PPonte
Quoted from http://hyperphysics.phy-astr.gsu.edu/hbase/gps.html#c1"
How do they know which of the points is the correct one? (see sentence in blod)
Thank you!![Approve :approve: :approve:](https://www.physicsforums.com/styles/physicsforums/xenforo/smilies/oldschool/approve.gif)
Adding a third as in the GPS system locates it at one of two discrete points where the three spheres intersect. The correct one is easily chosen to get a precise location. The 24 GPS satellites carry atomic clocks to give them the accuracy necessary for position measurement.
How do they know which of the points is the correct one? (see sentence in blod)
Thank you!
![Approve :approve: :approve:](https://www.physicsforums.com/styles/physicsforums/xenforo/smilies/oldschool/approve.gif)
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