On 3/30/2021 4:33 PM, Lux, Jim wrote:
On 3/30/21 2:56 PM, Wes wrote:
You would know better than I, but I was thinking of physical size; 100m v. 70m.
Obviously a BIG difference in TX power.
Wes
It's all about EIRP, baby.
I know they're talking about half a megawatt for GB, but I don't see it
happening. They've spent so much time making it "radio quiet", putting a big
honkin transmitter there seems odd. Just think, a return loss from the feed
of -30dB (which is pretty good) is good fraction of a kilowatt.
But AFAIK the system is bistatic (pseudo-monostatic) so there's no local
receiver to be subjected to transmitter leakage. We worried about leakage in
the pulse doppler radars I'm familiar with; AMRAAM and Phoenix missiles, but
even they were bistatic for most of their flights, tracking off the aircraft
fire control radar which had significantly higher ERP. Only when close to the
targets did they go active.
Wes
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