Dictionary:Refraction count
Revision as of 00:16, 11 June 2017 by Acabralesv (talk | contribs) (Marked this version for translation)
The difference between Doppler frequency count from a navigation satellite for radio waves of different frequencies. Ionospheric refraction (which is inversely proportional to frequency) can be determined from the differences, allowing one to correct for the refraction when elevation angles are above 7.5 degrees.
