where D = 
CALCULATION OF RADIO GAIN 39] 
Se eee 
sac a Fa 
Die acs a 
ies eee 
fafa 
= o|o 
«a 
ea 
Aa 3 2 el fo) 
Ficure 17. is setts ctor D as a function of p and g or pand s. (Radiation Laboratory.) (p = 1 is the line of sight 
0.) N /' 
e:S =1—q=d,/d. 
‘2 
fir) = (1-2) 
Pp 
) 2 a) 
3 6 
22 -4 
Figure 18. (1 — p*)?/p as a function of p. (Radia- 
tion Laboratory.) 
Hence it follows that 
Since 
de \db <2] 
heen 
f 1G - - = )¢ 1 Frais 
d (l—ad aa 
ha = ba (— 1 \(1- p+ =). (98) 
Generalized Coordinates 
The distance from the transmitter to the reflection 
point d, and the ratio p may be eliminated by using 
the dimensionless coordinates 
(99) 
