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From: olbers@bobcat.ent.ohiou.edu (Robert Olbers ece)
Newsgroups: sci.electronics
Subject: Re: Fooling Radar Detectors
Message-ID: <1765@oucsace.cs.OHIOU.EDU>
Date: 17 Aug 90 15:32:43 GMT
References: <2835@mindlink.UUCP>
Sender: usenet@oucsace.cs.OHIOU.EDU
Organization: Ohio University, College of Engineering & Tech.
Lines: 35

In article <2835@mindlink.UUCP> a143@mindlink.UUCP (Ed Meyer) writes:
>> fish@gemed.com writes:
>> 
>> Mount 4 or so corner reflectors on a rotating frame such as
                    [...]
>> 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.





What about deliberately causing the radar to overestimate your speed?
What could the cops do if they clocked you at, say 150mph in a Yugo?
It seems that at least the radar evidence would be useless in court.
(Of course, they can still clock you from airplanes... ~B^> )






R. L. Olbers                 'Being disintegrated makes me very angry'
olbers@bobcat.ent.ohiou.edu                       - Marvin Martian
                             'Being disinformed makes me very angry'
                                                  - RLO