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New radar invented

Dragon

17:06 / 03.07.06

COLUMBUS, Ohio -- Ohio State University engineers have invented a radar system that is virtually undetectable, because its signal resembles random noise.

Seems to me, this could have military applications which we should not allow other governments to obtain until we can figure out how to counter it, at least.

Quantum

17:31 / 03.07.06

Seems to me we should not allow governments to obtain it.

astrojax69

22:34 / 03.07.06

espcially the us government... or better, give it to everybody!!

and i like this:
A receiver couldn't detect the signal unless it knew exactly what random pattern to look for.

if the pattern is actually 'random', then how would anything know what to look for?? is it random or exact? or am i missing something? [or is this phrased badly?]

i wonder what it's like at very small ranges - medical imaging was mentioned. brain scanning? could be a boon...

All Acting Regiment

10:41 / 05.07.06

Who's this "we"?

ngsq12

10:45 / 05.07.06

I have not read the article but i guess that the "random" pattern that is transmitted by the radar is stored and then matched up with the echo recieved (obviously accounting for doppler shift and the like). I wonder if some sort of pulse modulated tricks can be used to measure velocity when using a random signal.

Elijah, Freelance Rabbi

17:19 / 05.07.06

A quick look over the article didn't tell me much, but 'random' really does not a mean a whole lot when it is machine generated randomness.

Look at the CD key for a copy of Windows. Somehow the software knows that the key is valid, and not by having all the keys on file somewhere. CD Keys are generated by a complex pile of math, then another complex pile of math takes the CD key and if it is satisfied that these reasonably random letters and numbers came from the correct pile of math to begin with it works.

I would assume that the 'random' patterns can be recognized by a receiver running the same software as having come from the trusted source.

Dragon

20:42 / 12.07.06

i wonder what it's like at very small ranges - medical imaging was mentioned. brain scanning? could be a boon...

Yep, I agree. It sounded like it would be relatively cheap to build, too.

Dragon

20:44 / 12.07.06

Who's this "we"?

Still to be decided. It could be limited to the United States or it could be shared with 'friendly countries.'

Henningjohnathan

21:42 / 12.07.06

"I have not read the article but i guess that the "random" pattern that is transmitted by the radar is stored and then matched up with the echo recieved (obviously accounting for doppler shift and the like). I wonder if some sort of pulse modulated tricks can be used to measure velocity when using a random signal.

Yeah, it sounds as if the signal is in a sense encrypted so that the receiver decodes it.

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