[amsat-bb] Re: AO-27 Schedule driver?
ka3hsw at earthlink.net
Thu Jan 18 16:59:44 PST 2007
As near as I can tell, it is now on a strictly time-driven, repeating
schedule lasting 1:40:48, with the analog mode starting 20 seconds into the
schedule and lasting 6 minutes.
If you haven't already, download the AO-27 Scheduler program my son wrote
for me from http://www.cs.rit.edu/~cjh9783/programs/satsched.php ... it's a
very handy way to see at a glance what mode the bird is in, and to predict
future passes when it will be in analog mode while in view of your station.
I just do a side-by-side comparison of SatPC32's WinAOS output with the
AO-27 Scheduler output for the next week. The calendar even lets you look
ahead as far as you want (assuming the schedule or epoch data don't change
in the meantime).
----- Original Message -----
From: "Robert Bruninga" <bruninga at usna.edu>
To: "'Howard Stephenson - K6IA'" <hlstephenson at gmail.com>;
<amsat-bb at amsat.org>
Sent: Thursday, January 18, 2007 8:07 AM
Subject: [amsat-bb] AO-27 Schedule driver?
> Regarding AO-27:
> Fantastic news about AO-27. Gives us something to use at
> schools to demo AMSATS...
> I think I have read most of the pages, but I cannot find the one
> thing I am looking for, and that is the top-level "rules" that
> are driving the new scheduling. I am not talking about code or
> epoc or anything like that, but simply, the human logical
> "rules" that tell the schedule, what to schedule...
> In the past, the TEPR algorithm was very simple and could be
> explained as "time since entering the sun". This was easy to
> interpret and anyone could easily visualize or "see" what this
> meant realitive to his time of day, and location. Nothing
> needed to be consulted... Just look at the track of the
> satellite on the map and your relation to the terminator, and
> you know if it is useable..
> The TOPR schedule seems to be wholy "time" driven from EPOC, but
> I have not been able to find what the top-level "rules" are that
> drive that algorithm so that I can learn to visualize it. The
> new on-line "schedules" are teriffic, and a good example of
> computer dissimination of live info, but it requires detailed
> consultation of printed schedules daily and having to match
> times with orbits, I'd rather just understand what the scheduler
> Is this new schedule system still driven by the simple rule of
> "turning it on for X minutes after entering the sun"? Or is it a
> smarter rule that says "turn on over USA, Europe, Australia and
> Japan?" or, "turn on over those countries only while in the
> sun", or, turn on for 10 minutes out of every hour, or what?
> So, can someone point me to this top-level "rule" that is used
> to drive the schedule? For routine operations, it is easier to
> learn the rule, than to have to look at a schedule every day...
> Bob, Wb4APR
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