[Isocops] CAR : Mon 6/14 1pm EDT : Lo Special Ops SCCB

[Nathan Schwadron]

Hi All

I spoke to Stephen today and recommended that we run the O-mode with a start bin of 0 and a stop bin of 59. The rationale is as follows. If we have a start tracker outage during O-mode and view only part of the great circle (start bin > 0 and stop bin <59) then we would end up not being able to reconstruct the data. So we are still at risk if a star tracker outage occurs. On the other hand if we view the whole great circle (start bin = 0 and stop bin = 59) then we would *not* compromise the data in case of a star tracker outage. 

The downside of using a start bin =0 and a stop bin = 59 is that we will exclude some of the  normal viewing during an orbit. However, I do not see this as a big downside. If we want to have some normal viewing, then we could switch between the O-mode table 3 and a normal mode on some cadence you can choose. In this case, because we view full great circles (start bin = 0 and stop bin =59), both the normal viewing and the O-mode viewing would be insensitive to a star tracker outage. I view this as being a far more robust solution and I think it will be far more successful in the long run. 

Let me be clear that I am happy to perform the test with either the original CAR from Chelle or the slight revision attached. 

Nathan



On Jun 10, 2010, at 1:16 PM, Reno, Michelle wrote:

> Attached is the CAR I have put together. The goal is to reset the Lo O-mode Start bin to 38 & Stop bin to 50, per Stephen's request. Please review and send comments.
>  
>  
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Chelle Reno
> Austin Mission Consulting
> 106 E. 6th St. Ste. 939
> Austin, TX  78701
> (512) 704-3394 (o)
> (210) 478-7337 (c)
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> From: Reno, Michelle
> Sent: Thu 6/10/2010 10:20 AM
> To: Harald Kucharek; Nathan Schwadron; Fuselier, Stephen A
> Cc: Eberhard Moebius; David Heirtzler; Petrinec, Steven M; Reno, Michelle; Peter Wurz; McComas, Dave; Mark Tapley; Ken Fairchild; isoc cops; Herb Funsten (hfunsten at lanl.gov); Dan Reisenfeld (dan.reisenfeld at umontana.edu); Paul Janzen (paul.janzen at umontana.edu)
> Subject: Mon 6/14 1pm EDT : Lo Special Ops SCCB 
> 
> Hi All,
>  
> We will have an SCCB for the o83 & o84 Lo Special Ops on the Monday 6/14 12:30 Eastern Ops Weekly Telecon.
>  
> Please call in at 1:00 Eastern to allow time for standard ops topics to be covered prior to this SCCB.
>  
> 866-750-1362
> 7727484#
>  
> o83 - Lo High Resolution Moon Viewing Test
> Description: Enter Oxygen Mode (LUT3) for a portion of the orbit when the moon viewing is optimal
> Commanding: Time tagged commands in STF. Start/stop bin set via CAR.
> Testing: Already tested on FlatSat.
> Impact on Hi: Leave HVSCI twice in the orbit for a few minutes each time to change Lo Mode.
>  
> o84 - Lo Background Test
> Description: Enter Background Mode (LUT255) for a portion of the orbit.
> Commanding: Time tagged commands in STF.
> Testing:
> Impact on Hi: Leave HVSCI twice in the orbit for a few minutes each time to change Lo Mode.
>  
> Thanks,
> Chelle
>  
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Chelle Reno
> Austin Mission Consulting
> 106 E. 6th St. Ste. 939
> Austin, TX  78701
> (512) 704-3394 (o)
> (210) 478-7337 (c)
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
>  
> <CAR-LoMoonTestPrep-100701.doc>
> Please restrict discussions on this email list to non-ITAR sensitive topics.
> ______________________________________________
> Isocops mailing list
> Isocops at lists.sr.unh.edu
> http://lists.sr.unh.edu/mailman/listinfo/isocops

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