[Moims-nav] Re: [Cesg-all] CCSDS Concept Paper: delta-DOR

Thu Aug 25 03:27:18 EDT 2005

David,
Thanks for your exhaustive answer. According to process "W" of CCSDS
procedures, the creation of a BOF does not require CESG approval but only AD
approval (of the charter). The specific issue with this BOF is that its topic
covers the expertise of 3 areas (as mentioned in your concept paper). For
this reason, the CESG may be the best forum to discuss how to go about it.

Best regards
 Jean-Luc Gerner
TEC-ETT
Tel: +31 71 565 4473

                      David Berry                                                                                                   
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                                                Subject: Re: [Moims-nav] Re: [Cesg-all] CCSDS Concept Paper:  delta-DOR             

Jean-Luc:

Thank you for your comments.  I have tried to address your questions in-line
with your message.  Please let me know if I should respond further.

Regards,
David

At 08:34 AM 8/23/2005, Jean-Luc.Gerner at esa.int wrote:
      Navigation WG

      Dave,
      Your paper is very interesting for its technical content and the
      exhaustive
      review of the technique and issues.
      I am missing however reference to the existing Delta-DOR recommendation
      CCSDS
      401 (2.5.6B) which is addressing the RF domain, was approved blue in
      1997 and
      reviewed in 2002 (with decision for 'no change'). How do you see this
      recommendation fit into your proposal?

The 401 Blue Book is listed as reference [6] in the Concept Paper.  Also, on
page 6 of the paper, it is stated that reference [6] "already addresses a
number of these factors and more, so a separate DOR tones specification may
not be necessary. However, for interoperability, agencies will at least need
to consider these items in an ICD or memorandum of understanding."  I wasn't
aware of the 401 document when I started on the Concept Paper, so I am
thankful that its existence was pointed out to me by one of the people I
asked to review it prior to submission.  My apologies for not citing the
specific section reference (the 2.5.6B); I should have been more thorough.

      I believe we should distinguish what is needed to ensure
      interoperability and
      what is more of the 'information exchange' nature and not prone to
      standardisation. Your concept paper seems to address both.

The only purpose of the Concept Paper was to propose that the CCSDS charter
Working Group(s) or BOF(s) to address the interoperability issues.  It is my
expectation that whatever group(s) are chartered to work on the topic will
address the issue that you suggest, and probably several others.

      What CCSDS needs also to address is the timeline. how much is missing
      from
      what is already available? when is it needed (what missions?)? Then we
      will
      be able to decide on how best use our resources; should we wait until
      current
      work is completed or does it require that we give it high priority and
      redirect current resources, putting other work on hold?

I agree that these are excellent questions.  However, I think that most of
these questions, as they deal with schedule and resource issues, would best
be addressed by the CESG, which will charter the working group(s)/BOF(s).

      Best regards
      Jean-Luc Gerner
      TEC-ETT
      Tel: +31 71 565 4473

                            David Berry

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                            n.ccsds.org                     Subject:
      [Cesg-all] CCSDS Concept Paper:  delta-DOR

                            11/08/2005 03:01

      Tom:

      I have attached the CCSDS Concept Paper that I mentioned to you I was
      working on, for posting at
      http://public.ccsds.org/publications/ConceptPapers.aspx

      If there's anything else you need, please let me know.

      Regards,
      David Berry(See attached file: delta-DOR-Concept-Paper.pdf)
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