Neural model of the propagation curves from ITU-R P.370-7

The ITU-R Recommendations are the international technical standards developed by the Radiocommunication Sector of the International Telecommunication Union (ITU). ITU-R is based on reading the diagrams defined in Recommendation ITU-R P.370-7. The main problem with ITU-R method is the extrapolation of the curves with the calculated h/sub e/ that differs from the values shown on the diagrams in Rec. ITU-R P.370-7. We examined a MLP neural model of the propagation curves and proved its accuracy on a few examples providing the best structure of the neural network.