JPL's Wireless Communication Reference Website Slide Show
Local obstacles cause random shadow
attenuation
Model:
Normal distribution of the
received power PLog in logarithmic units (such
as dB or neper),
Probability Density:
where
s is the 'logarithmic standard deviation' in natural units.PLog = ln [local-mean power / area-mean power ]
The standard deviation in dB is found from s = 4.34 s
