(Untitled) (Untitled)(Untitled) (Untitled)(Untitled) (Untitled)(Untitled) (Untitled)(Untitled)Examples




IEVref:705-07-73ID: 705-07-73
Language:enStatus: Standard
Term: critical frequency, <in ionospheric propagation>
Synonym1:
Synonym2:
Synonym3:
Symbol:
Definition: highest frequency at which a radio wave undergoes reflection in an ionospheric layer on which it is incident vertically

Note 1 to entry: There is usually one critical frequency for each magneto-ionic component

Note 2 to entry: The critical frequency for the ordinary wave is the plasma frequency corresponding to the maximum electron density of the layer.

Note 3 to entry: The critical frequencies for the ordinary wave and the extraordinary wave are respectively represented by the symbols fo and fx, followed by the designation of the layer, for example: foF2.


Publication date:2014-11
Source:
Replaces:705-07-73:1995-09
Internal notes:
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:Radio wave propagation
Domain2:Influence of the ionosphere on radio wave propagation
Domain3:
Domain4:
Domain5: