Originally posted by @deepthought
I see a couple of difficulties with this. The first problem, which the article alludes to, is that a functional radar uses a lot of power - to the extent that you simply cannot get too close to a military radar if you do not want to be cooked. I do not see how they can generate a signal with an adequate amount of power which is quantum entangle ...[text shortened]... n't adequate for - jamming and stealth coatings not being a huge feature of civilian airtraffic.
If the high power part was solved, maybe it would be best used in radio astronomy say on the moon with no atmosphere to screw things up, also makes for a better beam with the same antenna dish.
When I was in the USAF as a kid of 21, I had a full blown working radar in our shop, it was rated at 1 megawatt pulsed but average power was more like 50 watts average.
I was assigned night duty once and had the test set up and running.
One night a janitor came in carrying an armful of 4 foot florescent tubes, maybe 20 of them destined for the trash.
So I (stupid for sure) saw him across the room and he did not see me fortunately for me, but I aimed the small dish at his lights and I was very surprised by how brightly the glowed and the janitor jumped about 3 feet in the air, tubes flying and smashing into pieces. I VERY quietly turned off the radar and bugged out before anyone knew I was there.
But it was a really vivid demo of how much power even 50 watts could be when it is squished in time to a sub-microsecond pulse with a PRF of about 4 milliseconds which allowed the beam to go out about 600 km, 1200 Km round trip time of about 4 milliseconds (3.33 milliseconds per Km). Of course only in air at ten thousand meters altitude could you achieve such a range in real life) but at 30 meters away......
I only did that particular stunt once and very glad I wasn't caught, I imagine I would have washed out of the force right then and there if they had known my stupid pet trick.
It was funny ATT though