The field strength
of the reflected wave is computed using the reflection
factor
and the field strength
of the incident wave1:
(1)
The reflection factor
is computed from the transmission factor
:
(2)
Additionally, the roughness is considered by:
(3)
A smooth surface has a value of
.
The value of
is shown in column L in the
table.
The reflection loss is then computed as follows:
(4)
1 G. Wölfle: Adaptive Modelle für die
Funknetzplanung und zur Berechnung der Empfangsqualität in Gebäuden. (Adaptive
Propagation Models for the Planning of Wireless Communication Networks and for the
Computation of the Reception Quality inside Buildings). PhD Thesis, University of
Stuttgart, published by Shaker Verlag, 2000.