Article View: sci.electronics
Article #14397Re: R.A.M. (was Re: Police Radar Frequency Info)
From: Joel Lessenberry
Date: Fri, 21 Jun 1991 19:58
Date: Fri, 21 Jun 1991 19:58
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2214 bytes
In article <7372@celery15.UUCP> skeffing@motcid.UUCP (John F. Skeffington) writes:
>In article <2017@ole.UUCP> ssave@ole.UUCP (Shailendra Save) writes:
>>In article <1991Jun18.005130.28440@cs.mcgill.ca>, mingmar@cs.mcgill.ca (Ming MAR) writes:
>> If RAM worked 100%, like you contend they do, how come
>> Czechoslovakia has come out with a detection method which can detect
>> the Stealth aircraft at 250 miles?
>
>Where have you heard about this new detection method? I do not recall
>any knowledgable person on stealth technology claiming the aircraft was
>invisiable to radar, rather it was difficult to detect. The implication
>of being able to detect a stealth aircraft at 250 miles woufd be that
>it could detect a "normal" aircraft at several times that distance. I
>find this very interesting and would like to know more about it.
>
The radars which can detect the stealth fighter are in fact mostly
older, long wavelength systems.
Some of these systems are classed as Over The Horizen systems, because they give some coverage past line of site. The long wavelengh, low
frequency can be bounced by the upper atmosphere.
However, the spatial accuracy of a radar coorespondes to frequency.
The higher the freq. the greater the accuracy.
I have heard that while detectable, you only know that the aircraft
is ... over that away....
joel
Joel Lessenberry, Distributed Systems | +1 313 948 3342
joel@cfctech.UUCP | Chrysler Financial Corp.
joel%cfctech.uucp@mailgw.cc.umich.edu | MIS, Technical Services
{sharkey|mailrus}!cfctech!joel | 2777 Franklin, Sfld, MI
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<1991Jun21.195857.13956@cfctech.cfc.com>Path:
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<1991Jun18.005130.28440@cs.mcgill.ca> <2017@ole.UUCP> <7372@celery15.UUCP>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!rphroy!cfctech!joel From: joel@cfctech.cfc.com (Joel Lessenberry) Newsgroups: sci.electronics Subject: Re: R.A.M. (was Re: Police Radar Frequency Info) Message-ID: <1991Jun21.195857.13956@cfctech.cfc.com> Date: 21 Jun 91 19:58:57 GMT References: <1991Jun18.005130.28440@cs.mcgill.ca> <2017@ole.UUCP> <7372@celery15.UUCP> Sender: Joel Lessenberry Organization: Chrysler Financial Corp., Southfield, MI Lines: 32