On Sun, 19 Oct 2003 03:57:04 -0400, John Keeney wrote:

"phil hunt" wrote in message
...

LPI = Low probability of intercept. Usually a psuedo-random
spread-spectum
signal that looks like random noise to a typical radar warning receiver.

Do you (or anyone else) have any estimate on how effective this is?

I don't know for a demonstrated (to me) fact, but in theory, it's danged
good.
Current LPI radar is one that has been adapted to spread spectrum technology
which works well in radios and is hard to direction find against: good clues
that it can be made to work as radar and is hard to intercept.

Anti-radiation missiles such as HARM or ALARM can detect radars. Can
they only detect older radars, or would they have some usefulness
against LPI radars too?

--
"It's easier to find people online who openly support the KKK than
people who openly support the RIAA" -- comment on Wikipedia
(My real email address would be if you added 275
to it and reversed the last two letters).