alt Hacker NewsHow does it help if you're passing between transmitter and receiver?
(either directly, or by bouncing a radar signal off the ionosphere and receiving it again)
You should still show up as a shadow?
How does it help if you're passing between transmitter and receiver?
(either directly, or by bouncing a radar signal off the ionosphere and receiving it again)
You should still show up as a shadow?
direct is practically useless, because that's point-to-point. lighting up the ionosphere that way seems like the hardest case scenario, requiring a very powerful transmitter, somehow ignored by sensitive high-resolution scanning over a large area of sky. and you'd be disrupted by other occluding objects like water vapor
there is precedent https://en.m.wikipedia.org/wiki/Over-the-horizon_radar but it seems like a limiting factor is suitable frequencies and resolution