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Old 10th Jun 2013, 00:40
  #4 (permalink)  
dcoded
 
Join Date: Oct 2009
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Posts: 197
Regarding if the satellite knows the ionospheric delay:

To some extent it does. How?
We on ground are making predictions of how the ionosphere will affect the signal on a particular day. This data is sent up along with the corrections to the satellite.
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