Then again, for how long can you keep a spoof secret?
As long as the enemy sees what they expect to see, indefinitely. Think Maskirovka.
I had no direct or indirect knowledge of this project but it doesn't surprise me in the least. It is my believe that the US is intending to dominate every part of the electromagnetic spectrum on the battlefield from 3Hz up. That means complete freedom of usage for us and complete denial to the enemy unless we choose to let them use it.
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)
I don't have the magazine in front of me now but they were also talking about projecting contrived images, IIRC, presumably onto radar screens or the modern equivalent.
Generally, after you've buzzed the tower at the enemy airbase and bombed the crap out of the aircraft parking area, he'll figure out that SOMETHING is going on. :)