Speaking of stealth being defeated, I recall reading an intriguing piece some years back noting that stealth aircraft leave “wakes” in the RF “sea” emitted by cellular towers, I wonder whatever became of that?
Air or RF, stealth or not, everything leaves a wake. Commercial weather radars are tracking wind speed and direction, and getting better all the time.
Is the military (ours or theirs) really behind that kind of tech?
I don’t think so. Add in RF and IR and who knows what else; you’re gonna be seen.
A hummingbird traveling at 500+ knots leaving a big ass wake, and a heat signature, is gonna be noticed.