"phil hunt" wrote in message
. ..
On Fri, 17 Oct 2003 23:49:37 GMT, Thomas Schoene
wrote:
"phil hunt" wrote in message
rg
On Thu, 16 Oct 2003 13:14:32 -0600, Scott Ferrin
wrote:

That's assuming the Typhoon can detect an LPI radar.

What's that, and how is it different from other radars?

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.

I believe the B-2 has a LPI ground mapping radar and one of
the early concepts for the JOINT STARS mission placed a
LPI equipped plane (Tacit Blue) near or over the front edge of
the battle line.