Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!van-bc!rsoft!mindlink!a143
From: a143@mindlink.UUCP (Ed Meyer)
Newsgroups: sci.electronics
Subject: Re: Fooling Radar Detectors
Message-ID: <2835@mindlink.UUCP>
Date: 15 Aug 90 01:58:50 GMT
Organization: MIND LINK! - British Columbia, Canada
Lines: 25

> fish@gemed.com writes:
> 
> Msg-ID: <FISH.90Aug14183156@his.gemed.com>
> Posted: 14 Aug 90 23:31:56 GMT
> 
> Org.  : GE Medical Systems, Milwaukee, WI
> Person: Mark Fisher
> 
> What do you guys and gals think of this idea?
> 
> Mount 4 or so corner reflectors on a rotating frame such as
> a plastic bicycle tire.  Coat the back of the reflector with resistive
> foam to dissipate the radar energy.  Make the corner reflector large
> enough RCS (Radar Cross Section) wise to be much brighter than your
> car.  Turn the reflectors at a constant rate of something like 120
> RPM.  And wa-la your car's dominate doppler shift will be  ~ 10 mph
> less than you are actually going.  That is assumming you can figure
> out which way to turn the reflectors ;)
> 
> Mark, if memory serves, this was tried about a dozen years ago: the corner
> reflectors caught the airstream as the car went forward and as expected the
> radar facing the oncoming car detected a much lower speed due to the relative
> retrogressive motion of the reflectors.  However, a radar (like the so-called
> radar camera) would see the reflectors receding at higher speed than the car.
> So, if they don't get you coming, they get you going.