Article View: sci.electronics
Article #18738Re: radar countermeasures
From: scw
Date: Tue, 01 Mar 1988 15:45
Date: Tue, 01 Mar 1988 15:45
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1360 bytes
What you really need is not a Xponder (mode C?) but a Jammer,
Police Radar is really a CW Doppler radar, what you need to do is
detect an incoming signal (on the band in question) and transmit a
signal that varies its frequency so that the recieved signal appears to
be from a target whose speed is varying from -200 to +200 MPH over a period
of about 1 second, then listen for ~.1 sec to see if he's still transmitting.
This will keep the police radar from locking onto your (weaker) reflected
signal. His gun will needs a fairly stable signal to lock onto. The nice
thing about this is that unless you regulary drive in the 100+ MPH range
his radar will never get any reasonable speed for your car (from either
direction).
<scw>
Stephen C. Woods; UCLA SEASNET; 2567 BH;LA CA 90024; (213)-825-8614
UUCP: ...!{{inhp4,ucbvax,{hao!cepu}}!ucla-cs,ibmsupt!ollie}!scw
ARPA:scw@SEAS.UCLA.EDU <-note change from cs.ucla.edu
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!elroy!cit-vax!ucla-cs!scw From: scw@CS.UCLA.EDU Newsgroups: sci.electronics Subject: Re: radar countermeasures Message-ID: <9879@shemp.CS.UCLA.EDU> Date: 1 Mar 88 15:45:25 GMT References: <4596@pucc.Princeton.EDU> <20271@bu-cs.BU.EDU> Sender: news@CS.UCLA.EDU Reply-To: scw@CS.UCLA.EDU (Stephen C. Woods) Organization: UCLA Computer Science Department Lines: 15