[MOIMS-NAV-EXEC] Requesting your input on proposed SANA entries in support of future CCSDS International standards for space data exchange

Wed Dec 20 08:59:21 UTC 2017

Hi Dan,
I am reviewing the comments. I'll try to give some feedback soon although I reckon that the discussion will be held at the next CCSDS meeting. What are your expectations on this?
One thing that has called my attention (not fully related to the review) is diagram that you have added to for the IAU et al. reference system transition (see below). I am interested in the reference for it where I can find some explanation on the details. Do you have it at hand? Can it be shared?
Thanks,
Fran

[cid:image001.png at 01D37979.34A21EC0]

From: Oltrogge, Daniel [mailto:doltrogge at agi.com]
Sent: jueves, 14 de diciembre de 2017 20:42
To: Fran Martínez Fadrique <fmartinez at gmv.com>; moims-nav-exec at mailman.ccsds.org
Subject: RE: Requesting your input on proposed SANA entries in support of future CCSDS International standards for space data exchange

Fran -

Apologies for the delay in getting back to you to address your good comments in the reference document.

Attached are Dave's thoughts in reply.

But here are some generic thoughts I had in response to your general comment, "I understand that the only different among the TOE_x frames is the motion of the origin being the axes directions identical in all cases. It may be worth making that explicit or simply making a TOE_x generic where x is the placeholder for the central body identification":

(1)    I'd like for us to discuss this further.  You could be correct that the axes are aligned, but I'm not sure of that:  For some other planet or lagrange point etc., could there be a reason to have their own unique, axis directions as well as unique center names?  I don't know the answer to that.

(2)    Since the origin of the frame can be different, that makes the frame different in my view.  After reviewing all of the various center-names that Alexandru was able to dig up, I'm not comfortable with using a number to specify the center.

a.       But if I'm not comfortable with a number or some other inclusion in the e.g. TOE_XX" moniker, then that means by definition that the center_name must accompany the TOE specification whenever TOE_CB is used.

b.      So...  I put in text for all XXXX_CB entries, which states: "... where the central body shall be defined via an accompanying "CENTER_NAME".

(3)    I'm a bit wishy-washy on the ALIGN_CB and ALIGN_EARTH entries myself - - we should discuss further (soon!)

Dan

Daniel L. Oltrogge
SDC Program Mgr. and Sr. Research Astrodynamicist
Center for Space Standards and Innovation
Analytical Graphics, Incorporated
Voice: 719-482-4552; E-mail: oltrogge at agi.com<mailto:oltrogge at agi.com>

From: Fran Martínez Fadrique [mailto:fmartinez at gmv.com]
Sent: 03 Nov 2017 04:53
To: Oltrogge, Daniel <doltrogge at agi.com<mailto:doltrogge at agi.com>>; moims-nav-exec at mailman.ccsds.org<mailto:moims-nav-exec at mailman.ccsds.org>
Subject: RE: Requesting your input on proposed SANA entries in support of future CCSDS International standards for space data exchange

My contribution to the discussion next week. To the time scales and reference frame part only.
Cheers,
Fran

From: MOIMS-NAV-EXEC [mailto:moims-nav-exec-bounces at mailman.ccsds.org] On Behalf Of Oltrogge, Daniel
Sent: jueves, 2 de noviembre de 2017 14:58
To: moims-nav-exec at mailman.ccsds.org<mailto:moims-nav-exec at mailman.ccsds.org>
Subject: [MOIMS-NAV-EXEC] FW: Requesting your input on proposed SANA entries in support of future CCSDS International standards for space data exchange

Here is the latest set of SANA registry entries that Julie and I have been iterating on, for our discussions next week.

As you can see below, I've reached out to 35 large space operators to solicit their inputs as well, and those are starting to come in (useful inputs).

For us to discuss on Monday.

David, I'm interested in what sorts of formats, equations/typesets, figures, etc. that SANA could support (?)

Dan

Daniel L. Oltrogge
SDC Program Mgr. and Sr. Research Astrodynamicist
Center for Space Standards and Innovation
Analytical Graphics, Incorporated
Voice: 719-482-4552; E-mail: oltrogge at agi.com<mailto:oltrogge at agi.com>

From: Oltrogge, Daniel
Sent: 31 Oct 2017 09:38
Subject: Requesting your input on proposed SANA entries in support of future CCSDS International standards for space data exchange

Flight Dynamics, operations and astrodynamics colleagues -

The Space Assigned Numbers Authority (SANA) is the registrar function for the protocol registries created under the Consultative Committee for Space Data Systems (CCSDS).  I support the Navigation Working Group (Nav WG) within CCSDS, and we develop international standards for data exchange of navigation-related elements of information.

We are currently exploring the use of the SANA registry as a "living" reference support document to contain definitions of content that are currently duplicated (sometimes inconsistently) across many of the CCSDS standards.  The concept is to have the next generation of CCSDS standards instead reference the SANA registry as the single unified and up-to-date source for definitions of parameters.

I would like to get your input on the attached proposed table of entries for definition of:

(1)    Time systems

(2)    Orbit element sets;

(3)    Absolute and relative reference frames;

(4)    Attitude and attitudinal dynamics definitions and parameters;

In each table, you can see the proposed "key" name and its associated definition.  What I'd like to know is:  Do the attached tables and content define what you are currently using operationally?  Is there anything missing (again that you are actively using in your operations) that you would like us to consider including in these tables?

If so, please let me know this week for inclusion into our CCSDS Fall meeting discussions next week.

Dan

Daniel L. Oltrogge
SDC Program Mgr. and Sr. Research Astrodynamicist
Center for Space Standards and Innovation
Analytical Graphics, Incorporated
Voice: 719-482-4552; E-mail: oltrogge at agi.com<mailto:oltrogge at agi.com>

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 en el marco de su Sistema de Gestion de Seguridad de la 
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prohibida su divulgacion copia o distribucion a terceros sin la 
autorizacion expresa del remitente. Si Vd. ha recibido este mensaje 
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