RE: [amsat-bb] I give up... Don't try this!

["Alan K. Adamson" <ne1h@xxxxxxxxxxxxxxx>]

More to the story.

This only happens with opal or any of the new sats.  Is there some sort of
error factor that happens with new sats.  I find this pretty odd.  On ao-27,
wisp32 and nova as exactly the same to the sec.  But on opal, they are off
by 56 sec!

Alan

-----Original Message-----
From: Dave Lamont [mailto:lamontd@paradise.net.nz]
Sent: Friday, February 04, 2000 2:34 AM
To: ne1h@ne1h.dyndns.org; amsat-bb@AMSAT.Org
Subject: Re: [amsat-bb] I give up... Don't try this!


Hi Alan,
I recently was testing Uni_Trac against some of the programs you mentioned.
I had in fact 7 different tracking programs running simultaneously on this
PentiumIII 500. I dont recall errors of the size you mention.

73

Dave


----- Original Message -----
From: Alan K. Adamson <ne1h@ne1h.dyndns.org>
To: <amsat-bb@AMSAT.Org>
Sent: Friday, February 04, 2000 4:06 AM
Subject: [amsat-bb] I give up... Don't try this!


> I was using NovaWin and decided to try automating the control of my radio.
> Well Nova didn't do it directly, so I got wisp32 and wispdde... Wow that
> worked great.
>
> Then I did some checking.  The AOS/LOS was off by 56 sec between wisp and
> Nova for the same time/keps/observer location and mode of track.
>
> So, hmm I thought.  Well let's add a third variable.  I got WinOrbit out
and
> sure enough, yet another projections.
>
> So. what gives.  They were off by a spread of 2mins.  WinOrbit being the
> earliest of the AOS times, Wisp32 in the middle and NovaWin last.
>
> That could sure screw up tracking heading and doppler corrections.
>
> I have no idea who is right and who isn't.
>
> Anyone want to guess or explain???  I'm curious?
>
> Thanks,
> Alan
>
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