Weissberger’s modified exponential decay model, or simply, Weissberger’s model, is a radio wave propagation model that estimates the path loss due to the presence of one or more trees in a point-to-point telecommunication link.
Frequency: 230 MHz to 95 GHz[1] Depth of foliage: up to 400 m Formulated in 1982, this model is a development of the ITU Model for Exponential Decay (MED).
Weissberger’s model is formally expressed as where, L = The loss due to foliage.
Unit: decibels (dB) f = The transmission frequency.
Unit: gigahertz (GHz) d = The depth of foliage along the path.