[MOIMS-NAV-EXEC] [EXTERNAL] Re: Question about State Transition Matrix aspect to the OCM

Thu Sep 10 02:31:08 UTC 2020

Dear Dan,

I know you've already decided to remove the STM section, but I confirmed that removing the STM section is fine with me too.

Best Regards,
Hideaki

---------------------------------------------------------------------------
Hideaki Hinagawa
Orbital Analyst
Flight Dynamics Team, Space Tracking and Communications Center, JAXA

-----Original Message-----
From: MOIMS-NAV-EXEC <moims-nav-exec-bounces at mailman.ccsds.org> On Behalf Of Oltrogge, Daniel
Sent: Thursday, September 10, 2020 5:16 AM
To: Halverson, Julie (GSFC-5990) <julie.halverson at nasa.gov>; Frank.Dreger at esa.int
Cc: moims-nav-exec at mailman.ccsds.org
Subject: Re: [MOIMS-NAV-EXEC] [EXTERNAL] Re: Question about State Transition Matrix aspect to the OCM

Thanks all for your many inputs.

I note that Alain had an interesting idea, which was that (paraphrasing) sharing of matrices could potentially be generalized such that a covariance exchange could be used to share an STM as well.  But since STMs are not symmetric (if I recall properly) and covariances are LTM, that’d probably not work.  But it was a novel idea, much appreciated.

I’ve decided to remove the STM section for this first version of the OCM, to be considered as a potential future enhancement.

Dan

__________________________
Dan Oltrogge
Director, 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: Halverson, Julie (GSFC-5990) <julie.halverson at nasa.gov>
Sent: Wednesday, September 9, 2020 2:11 PM
To: Frank.Dreger at esa.int; Oltrogge, Daniel <doltrogge at agi.com>
Cc: moims-nav-exec at mailman.ccsds.org
Subject: Re: [EXTERNAL] Re: [MOIMS-NAV-EXEC] Question about State Transition Matrix aspect to the OCM

And also fine with me.

Julie

-------------------------------------------
Julie Halverson
NASA Goddard Space Flight Center
Systems Engineer
Space Science Mission Operations (SSMO)/Code 444
301-614-7016

From: MOIMS-NAV-EXEC <moims-nav-exec-bounces at mailman.ccsds.org<mailto:moims-nav-exec-bounces at mailman.ccsds.org>> on behalf of "Frank.Dreger at esa.int<mailto:Frank.Dreger at esa.int>" <Frank.Dreger at esa.int<mailto:Frank.Dreger at esa.int>>
Date: Tuesday, September 8, 2020 at 3:40 AM
To: "Oltrogge, Daniel" <doltrogge at agi.com<mailto:doltrogge at agi.com>>
Cc: "moims-nav-exec at mailman.ccsds.org<mailto:moims-nav-exec at mailman.ccsds.org>" <moims-nav-exec at mailman.ccsds.org<mailto:moims-nav-exec at mailman.ccsds.org>>
Subject: [EXTERNAL] Re: [MOIMS-NAV-EXEC] Question about State Transition Matrix aspect to the OCM

Dear Dan,

No objection from my side.

Kind regards

Frank Dreger

ESA – European Space Agency

Frank Dreger
Senior Flight Dynamics Service Manager
Ground Systems Engineering and Innovation Department ESOC

Robert-Bosch-Str. 5, 64293 Darmstadt, Germany frank.dreger at esa.int<mailto:frank.dreger at esa.int> | www.esa.int<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.esa.int&d=DwMGaQ&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=XOfz3jnCU4JiwJMrJakKjhd9ggUHNASAVFiy4wvWJDw&m=jvL6473uQAyNOqo-BDjG3DO1af54SIJ5ynH5pM9Azes&s=gLIycHlCSvyZK67rs3nhKCeN5MuZuvzYOOIgdxGpSCI&e=>
T: +49 6151 90 2664

From:        "Oltrogge, Daniel" <doltrogge at agi.com<mailto:doltrogge at agi.com>>
To:        "moims-nav-exec at mailman.ccsds.org<mailto:moims-nav-exec at mailman.ccsds.org>" <moims-nav-exec at mailman.ccsds.org<mailto:moims-nav-exec at mailman.ccsds.org>>
Date:        2020/09/04 21:20
Subject:        [MOIMS-NAV-EXEC] Question about State Transition Matrix aspect to the OCM
Sent by:        "MOIMS-NAV-EXEC" <moims-nav-exec-bounces at mailman.ccsds.org<mailto:moims-nav-exec-bounces at mailman.ccsds.org>>

________________________________

NAV WG Team:

Question regarding the new CCSDS Orbit Data Message (ODM) we are creating:  Would anyone be heartbroken if we were to delete the State Transition Matrix data section?  I worked to get that included so that we could map covariances from one point to another and perturbations and/or small DVs downstream, but I’m now wondering if our projected use of this message feature warrants the effort and complications we can assume this will introduce into message adoption and testing.

Does anyone in our group feel strongly that this STM message component should be retained?

Thanks,

Dan
__________________________
Dan Oltrogge
Director, 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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