[Smwg] SACP Book Concept Paper

Fri Aug 16 12:24:19 UTC 2019

Hi John,

I'm just back from business trip, and actually on Monday starting my vacation. But I managed to at least go through your comments.

1)      Regarding relation to your TN, you are principally right. This might have to be a Green Book. It may be (some) burden I admit. On the other hand, I do not see much possibilities to get EVERYTHING which is needed to fully understand stuff (the background and so on) and put it into BB. Maybe we should consider to put some (selected) contents of your TN into THE Green Book (which shall get update anyway).

2)      Regarding terminology you are right and thanks for your comment with some clear examples. I will update the concept respectively.

3)      The cookie-cutter comment is good in my opinion. I must admit I was just shortly wondering about the Schemas and how they are structured, so your idea may be the one.

4)      To the last comment:  I'm not sure if I understand your concern completely. What I imagine is to have a "generic" schema or even schemas (a la cookie cutters - i.e. schema for CLTU forward service, where "blocks" of parameters are predefined (like aperture block - 401 block - coding modulation block - transfer service block...) but they do not have any specified parameters inside (they allow in principle any parameter-value in the generic manner). As you mention, this would normally not hold for monitoring and control, but my thinking is, if agencies go so far for monitoring and control, than they will also support full CCSDS FR-stuff. On the other hand, what you propose to allow agencies to register their own subtree, is maybe worth consideration.

Marcin

From: John Pietras [mailto:john.pietras at gst.com]
Sent: Dienstag, 13. August 2019 17:45
To: Gnat, Marcin; erik.j.barkley at jpl.nasa.gov
Cc: smwg at mailman.ccsds.org
Subject: RE: SACP Book Concept Paper

Dear Marcin,
Attached is a commented copy of your SACP Concept Paper. Overall I think that it is going in the right direction, and my comments focus on just a few points. Unfortunately I won't be participating in the next telecon (well, not so unfortunately, as I'll be on vacation), so I won't be able to join in the discussion then. But I'll be happy to discuss my comments after I get back, if you wish. And perhaps we can arrange to get together when you are here the week before the Darmstadt meeting.

And thanks again for the Cookie Cutter graphic (can we get this adopted as an official CCSDS logo?)

Best regards,
John

From: SMWG <smwg-bounces at mailman.ccsds.org<mailto:smwg-bounces at mailman.ccsds.org>> On Behalf Of Marcin.Gnat at dlr.de<mailto:Marcin.Gnat at dlr.de>
Sent: Tuesday, July 16, 2019 12:07 PM
To: erik.j.barkley at jpl.nasa.gov<mailto:erik.j.barkley at jpl.nasa.gov>
Cc: smwg at mailman.ccsds.org<mailto:smwg at mailman.ccsds.org>
Subject: [Smwg] SACP Book Concept Paper

Dear Erik (and SMWG),

See attached. It got a bit lengthy, but I hope I captured what I want to do. Hopefully it fits also to the common understanding we have (because we have it, don't we? ;-)
I'm happy if you shall have any comments or corrections.

I also know it's not yet the perfectly smooth bunch of text, I can iron it later on (and make it for example shorter), but first I want to know if the general content is okay with you.

I'd be also happy if John can drop an eye on that... I hope it's not too messy. By the way, few sections and sentences I just took a freedom to copy out of the TN. I hope this is okay.

[cid:image001.jpg at 01D5543C.D99C2E80]

Best regards
Marcin
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