ITU-R P.531
Ionospheric propagation data and prediction methods required for the design of satellite services and systems
| Organization: | ITU-R |
| Publication Date: | 1 September 2016 |
| Status: | inactive |
| Page Count: | 24 |
scope:
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.
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