Name:
ITU-R P.531-12 PDF
Published Date:
09/01/2013
Status:
[ Revised ]
Publisher:
International Telecommunications Union
Recommendation ITU-R P.531 describes a method for evaluating of the ionospheric propagation effects on Earth-space paths at frequencies from 0.1 to 12 GHz. The following effects may take place on an Earth-space path when the signal is passing through the ionosphere:
– rotation of the polarization (Faraday rotation) due to the interaction of the electromagnetic wave with the ionized medium in the Earth's magnetic field along the path;
– group delay and phase advance of the signal due to the total electron content (TEC) accumulated along the path;
– rapid variation of amplitude and phase (scintillations) of the signal due to small-scale irregular structures in the ionosphere;
– a change in the apparent direction of arrival due to refraction;
– Doppler effects due to non-linear polarization rotations and time delays.
The data and methods described in this Recommendation are applicable for planning satellite systems, in respective ranges of validity indicated in Annex 1.
| Edition : | 12 |
| Number of Pages : | 24 |
| Published : | 09/01/2013 |
