Approximation of the propagation curves from the Recommendation ITU-RP.370-7

Abstract

The ITU-R method for field strength prediction is basically a graphical method. The main disadvantage is the extrapolation of the curves with the calculated h/sub eff/ that differs from the values shown on the diagrams in Rec. ITU-R P.370-7. We provided the mathematical model of the propagation curves and a simple computer algorithm, which would solve the problems mentioned above.