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Re: Pin point the UO-14 jammer.



The key will be to find his AOS and LOS.

If you guys send me the AOS and LOS times and dates on a number of sessions
then I'll run the numbers for you.

I'm a bit outa the footprint here to take readings myself

Cheers
Paul, VP9MU

----- Original Message -----
From: "Vince Fiscus, KB7ADL" <vlfiscus@mcn.net>
To: <amsat-bb@AMSAT.Org>
Cc: <brahn@voyager.net>
Sent: Saturday, July 28, 2001 12:40 PM
Subject: RE: [amsat-bb] Pin point the UO-14 jammer.


>
> Yes, there's lots of possibilities for this sort of thing. I've read in
> DF'ing books about satellites that use similar methods to find downed
> aircraft from the doppler shift of their ELT.  Unfortunately, UO-14 is an
> FM bird and so the doppler shift of the jammers uplink can't be
> determined.  This means we can only use the less accurate method I
> mentioned earlier.
>
> 73, KB7ADL
>
> At 09:58 PM 7/27/01 -0400, <brahn@voyager.net> wrote:
> >Many years ago (something on the order of 12 plus), Courtney Duncan,
N5BF,
> >shared a copy of some software an associate of his was working on called
> >SATFOXHUNT.  SATFOXHUNT was exactly as the name implies--fox hunting the
> >location of an unknown station using a known location of the satellite at
an
> >instance in time along with a measurement of the doppler shift of the
fox.
> >
> >The software, while a challenge to use, produced some amazing results.  I
> >was able to locate stations within 50 KM or so of their known location.
> >Given today's computer processing power along with more advanced station
> >automation a program similar to this should be able to nail things down
much
> >quicker with better accuracy.
> >
> >Like a lot of things at the time, I didn't have the time to experiment
more
> >with the software or work with Courtney on refinements.  Sigh....so much
to
> >do and so little time.
> >
> >Perhaps if Courtney is following the thread he can amplify a bit more on
> >things.
> >
> >73 -- Bruce
> >
> >
> >Bruce Rahn
> >WB9ANQ
> >brahn@voyager.net
> >
> >Wisdom has two parts:
> >1.  having a lot to say; and
> >2.  not saying it!
> >
> >
> >-----Original Message-----
> >From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
> >Behalf Of Vince Fiscus, KB7ADL
> >Sent: Friday, July 27, 2001 11:14 AM
> >To: amsat-bb@AMSAT.Org
> >Subject: [amsat-bb] Pin point the UO-14 jammer.
> >
> >
> >
> >We can pin point the jammer on uo-14 using instant track.  What the idiot
> >doesn't doesn't realize is that the longer he transmits during a pass the
> >more we can locate him.  If he transmits horizon to horizon, his location
> >should fall on a thin line. Monitoring a number of passes can make the
line
> >or football shape smaller.
> >
> >[stuff deleted]
> >
> >KB7ADL
> >
> >----
> >Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> >To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
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>

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