If you know your enemies radios, then you know the probable frequencies they will be using. If freq hopping harder sure. Still possible. Your not trying to decode it just follow it back.
Harder to get a receiver between the satellite and its ground receiving station. to get the best fix on the transmitter.
Just back trace the signal to the active satellite. Home on signal, kinetic kill weapon.
Now we can do it from an AEGIS destroyer, don't need an F-15 or B-52 to get the missile aloft.
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