Actually, passive radar's getting popular for those who don't want their radar systems bombed out in the first attack run. Specifically, if you don't want stea

Actually, passive radar's getting popular for those who don't want their radar systems bombed out in the first attack run. Specifically, if you don't want stealths coming in & bombing out your radar installations, hide sensitive receivers throughout your city and let the cell towers, tv stations, etc. do the transmission for you. Donno anything about the signal analysis part of this, but that's the gist of what I heard.