I understand where you are coming from, but I'm talking about effective
invisibility, not true invisibility. If the radar return cannot be
distinguished from ground clutter or other returns around the aircraft, for
all intents and purposes it is invisible.

Juan

"C.D. Damron" wrote in message
news

I was taking issue with the word invisible. Just about anything that is
low, fast, and small presents an interesting detection problem, but the
word
invisible is a bit of hyperbole.