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//Chapter 3, Example 3.7, page 80
clc
//Initialisation
f=18 //frequency in GHz
d=30 //in km
R=25 //rainfall intensity in mm
//Using Table 3.3
av15=1.128
av20=1.065
av18=1.09
kv15=0.0335
kv20=0.0691
kv18=0.0587
//Calculation
yr=kv18*R**av18 //rain specific attenuation
de=(90*(90+d)**-1)*d
A=de*yr //Maximum rain attenuation
//Results
printf("(1) Rain specific attenuation = %.2f dB/km",yr)
printf("\n(2) Maximum rain attenuation = %.1f dB",A)
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