RE: [amsat-bb] Lock on Tracking

["Gary Gonnella" <gary@xxxxxxxxxxx>]

Or alternately you could have 4 separate feeds spaced around the main feed
and either have a down converter for each or come up with a switching
circuit that would sample each in turn the steer the antenna in the
direction of the strongest signal.

Gary Gonnella W6RYO
gary@w6ryo.com
http://www.w6ryo.com


> -----Original Message-----
> From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
> Behalf Of Al Lawler
> Sent: Wednesday, December 11, 2002 7:18 AM
> To: Ben
> Cc: Rod Smallwood; AMSAT-BB
> Subject: Re: [amsat-bb] Lock on Tracking
>
>
>
>     You could concievably average the
> peaks, then try to drive the antennas based
> on the averaged signal, combined with a bit
> of AI knowledge of what sort of correction
> last worked,  but it would probably take
> a relatively custom  solution for
> each installation, I'd  imagine
>
> (and things like blowing leaves,
> or varying precipitation intensity
> would make it exciting to debug... :^)
>
>   -al
>
>
>
> Ben wrote:
> >
> > Hi Rod
> >   I have thought about building a system that would work by
> using the signal
> > strength from the satellite as reference than a simple error amplifier
> > circuit to drive the AZ-El. But this may be very difficult if the signal
> > from the satellite fluxuates allot. With fast enough circuits
> and motors, it
> > seems possible, but it would probably take a good computer programmer to
> > develop a workable algorithm.
> > My thoughts
> > Ben K9BF
> > ----- Original Message -----
> > From: "Rod Smallwood" <Rod@sbs293.customer.demon.com>
> > To: <amsat-bb@AMSAT.Org>
> > Sent: Wednesday, December 11, 2002 4:16 AM
> > Subject: [amsat-bb] Lock on Tracking
> >
> > > Unless I am much mistaken everybody uses predictive tracking.
> > > Has anybody had any experience with Radar style tracking
> > > where the system locks on to the target (ie AO40) and follows
> > > it?
> > >
> > > Rod (G8DGR)
> > >
> > >
> > >
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> > >
> >
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