ITU-R P.618-13 PDF

This Recommendation predicts the various propagation parameters needed in planning Earth-space systems operating in either the Earth-to-space or space-to-Earth direction.

The ITU Radiocommunication Assembly,

considering

a) that for the proper planning of Earth-space systems, it is necessary to have appropriate propagation data and prediction techniques;

b) that methods have been developed that allow the prediction of the most important propagation parameters needed in planning Earth-space systems;

c) that as far as possible, these methods have been tested against available data and have been shown to yield an accuracy that is both compatible with the natural variability of propagation phenomena and adequate for most present applications in system planning,

recommends

that the methods for predicting the propagation parameters set out in Annex 1 should be adopted for planning Earth-space radiocommunication systems, in the respective ranges of validity indicated in Annex 1.

NOTE – Supplementary information related to the planning of broadcasting-satellite systems as well as maritime, land, and aeronautical mobile-satellite systems, may be found in Recommendations ITU-R P.679, ITU-R P.680, ITU-R P.681 and ITU-R P.682, respectively.