RE: [amsat-bb] Pin point the UO-14 jammer.

["Bruce Rahn" <brahn@xxxxxxxxxxx>]

James,

You're right!  I completely forgot about that.

Another thing I thought of after the fact was the challenge back then in
making accurate time-tagged doppler measurements.  But with DSP technology
it should be a snap doing this with a low cost sound card.  As I said, times
AND most importantly technology have changed by leaps and bounds!  It should
be a snap for someone who has the time and talents to code something.
Couple this with the idea of local monitoring once the general location of a
jammer has been plotted and you have a winner!

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 James Sharp
Sent: Friday, July 27, 2001 11:17 PM
To: amsat-bb@AMSAT.Org
Subject: RE: [amsat-bb] Pin point the UO-14 jammer.


> 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.

If I'm not mistaken, thats how the SARSAT/COSPAS systems work for getting
the position of the emergency transmitters onboard downed aircraft...so
there's been lots of work refining techniques and software and general
procedures for that.

James
N5XNS

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