I have DSB D-VOR.
Anyone know the meaning of the formula of "AM Modulation factor" of D-VOR's "9960FM".
When i know RF Power of Carrier[Pc] and each Subcarrier(Upper Sin[Pus], Upper Cos[Puc], Lower Sin[Pls], Lower Cos[Plc]).
and each value is as follows...
Pc=200 [W rms]
Pus=5 [W rms]
Puc=5 [W rms]
Pls=5 [W rms]
Plc=5 [W rms]
M9960={(Pus + Puc + Pls + Plc)/Pc)*F}^(1/2)
F=η*((PI^2)/8)
η=Distributor efficiency=77[%]
F=0.945
I think it means,
m=2*(Ps/Pc)^(1/2)
Ps=(1/4)*(Pus + Puc + Pls + Plc)
and, subcarrier is Modulated in space, so η is multiplied.
but, I dont know what does (PI^2)/8 mean,
(... I guess it means Square root of Form Factor of sine wave)
Anyone know Why is it multiplied (PI^2)/8?
each Power value is root mean square value.
-----
I'm sorry for using confused English.
Anyone know the meaning of the formula of "AM Modulation factor" of D-VOR's "9960FM".
When i know RF Power of Carrier[Pc] and each Subcarrier(Upper Sin[Pus], Upper Cos[Puc], Lower Sin[Pls], Lower Cos[Plc]).
and each value is as follows...
Pc=200 [W rms]
Pus=5 [W rms]
Puc=5 [W rms]
Pls=5 [W rms]
Plc=5 [W rms]
M9960={(Pus + Puc + Pls + Plc)/Pc)*F}^(1/2)
F=η*((PI^2)/8)
η=Distributor efficiency=77[%]
F=0.945
I think it means,
m=2*(Ps/Pc)^(1/2)
Ps=(1/4)*(Pus + Puc + Pls + Plc)
and, subcarrier is Modulated in space, so η is multiplied.
but, I dont know what does (PI^2)/8 mean,
(... I guess it means Square root of Form Factor of sine wave)
Anyone know Why is it multiplied (PI^2)/8?
each Power value is root mean square value.
-----
I'm sorry for using confused English.