[Smwg] ESA Review of PIF

Barkley, Erik J (3970) erik.j.barkley at jpl.nasa.gov
Fri May 5 00:16:43 UTC 2017


Now that I've had a bit more time to look at your comments and questions I can offer you more responses which are embedded below.

Best regards,

From: SMWG [mailto:smwg-bounces at mailman.ccsds.org] On Behalf Of Colin.Haddow at esa.int
Sent: Wednesday, May 03, 2017 3:06 AM
To: CCSDS Service Mgmt WG (smwg at mailman.ccsds.org) <smwg at mailman.ccsds.org>
Subject: [Smwg] ESA Review of PIF

Dear all,
                  we've just completed the ESA review of the current draft of Planning Information Formats events and have identified the following points and questions.

  1.  It would be useful to add the OWLT as an optional parameter to all events
EB: The DSN includes RTLT for each event. I see below that you have RTLT versus OWLT. I'm sure that either will be useful but I suspect that in fact for the point of view of aperture to spacecraft and back the RTLT is potentially more useful in planning. But that could just be my bias.

  1.  It would be useful to add the elevation angle as a mandatory parameter to the FwdComsStartEvent, RetComsStartEvent ,FwdComsEndEvent and RetComsEndEvent events (JP would this cause any problems with respect to TDRS ?)
EB: The DSN produces AZ/EL readouts for each event.
KeyholeEvent should be split into 2, KeyholeStart and KeyholeEnd
EB: The DSN does this effectively by issuing "above maximum elevation" and "below maximum elevation" type events.

  1.  Question; should OWLT or RTLT be used ?
EB: RTLT is used by the DSN (see above).

  1.  Question: How should comms events be handled for Rovers, e.g. define the relay spacecraft (or Rover) as an aperture or define specific events for Rover visibility or any other ideas ?
EB: Aperture - see yesterday's email.

Anyway these can be used as input to the PIF discussion in San Antonio.

Cheers for now,


Dr. Colin R. Haddow,
HSO-GI, European Space Agency,
European Space Operations Centre,
Robert-Bosch-Str 5,
64293 Darmstadt,

Phone; +49 6151 90 2896
Fax;      +49 6151 90 3010
E-Mail;  colin.haddow at esa.int<mailto:colin.haddow at esa.int>

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