[SLS-CC] FW: Liaison statement from SFCG to CCSDS on Recommendation SFCG 42-1

Tue Sep 10 14:27:59 UTC 2024

FYI

Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

From: Andrea Modenini
Sent: Tuesday, September 10, 2024 4:28 PM
To: Bruno Espinosa <Bruno.Espinosa at esa.int>; Lee, Dennis K (US 332G) <dennis.k.lee at jpl.nasa.gov>; 'greg.j.kazz at jpl.nasa.gov' <greg.j.kazz at jpl.nasa.gov>
Cc: 'secretariat at mailman.ccsds.org' <secretariat at mailman.ccsds.org>; Maite Arza <Maite.Arza at esa.int>
Subject: RE: Liaison statement from SFCG to CCSDS on Recommendation SFCG 42-1

Hi Bruno,
>From a first iteration with the WGs we got a first set of questions:

  1.  We understand that Proxy-1 frequencies are organized in two chunks. One recommended covering channels 0-4, and one covering 5-9 channels. Can missions use both hailing channels for either/or frequency chunk (mix up)?

Example: imagine a mission using hailing 0 and then frequency channels 5-8 for data transmission

  1.  Does 2095.1583 -2100.1583 MHz channel (2nd chunk, with the note **) require specific frequency coordination for approval since it is a shared chunk? Should we reflect this with a note in CCSDS Prox-1 book? E.g., we allow the protocol to have all channels but put a caveat that is subject to SFCG frequency coordination as per RES A26?
  2.  For making the hailing channel as much as possible, we would like to avoid to filter the Bi-phase-L (SP-L/PM modulation). Is it feasible for SFCG to consider to add an exception for the hailing channel to the mask in REC 41-1, in lieu that hailing channels are 2 ksps only?

Regards
Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

From: Andrea Modenini
Sent: Tuesday, August 27, 2024 6:21 PM
To: Bruno Espinosa <Bruno.Espinosa at esa.int<mailto:Bruno.Espinosa at esa.int>>; Lee, Dennis K (US 332G) <dennis.k.lee at jpl.nasa.gov<mailto:dennis.k.lee at jpl.nasa.gov>>; greg.j.kazz at jpl.nasa.gov<mailto:greg.j.kazz at jpl.nasa.gov>
Cc: secretariat at mailman.ccsds.org<mailto:secretariat at mailman.ccsds.org>; Maite Arza <Maite.Arza at esa.int<mailto:Maite.Arza at esa.int>>
Subject: RE: Liaison statement from SFCG to CCSDS on Recommendation SFCG 42-1

Thanks Bruno, it is very helpful!

I have just forwarded to the Coding & Synch WG

Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

From: Bruno Espinosa <Bruno.Espinosa at esa.int<mailto:Bruno.Espinosa at esa.int>>
Sent: Tuesday, August 27, 2024 4:53 PM
To: Andrea Modenini <Andrea.Modenini at esa.int<mailto:Andrea.Modenini at esa.int>>; Lee, Dennis K (US 332G) <dennis.k.lee at jpl.nasa.gov<mailto:dennis.k.lee at jpl.nasa.gov>>; greg.j.kazz at jpl.nasa.gov<mailto:greg.j.kazz at jpl.nasa.gov>
Cc: secretariat at mailman.ccsds.org<mailto:secretariat at mailman.ccsds.org>; Maite Arza <Maite.Arza at esa.int<mailto:Maite.Arza at esa.int>>
Subject: Liaison statement from SFCG to CCSDS on Recommendation SFCG 42-1

Dear Andrea, dear Dennis, dear Greg,

At its annual meeting in June, SFCG finally approved the SFCG Recommendation 42-1 on the frequency channel plan for in-situ lunar data relay satellites. As a result, SFCG also approved the attached liaison statement to CCSDS to support your activities in updating the CCSDS Prox-1 protocol.

Dennis and myself were involved in the SFCG discussions and we are available in case of questions.

Best regards
Bruno Espinosa

ESA - European Space Agency

Bruno Espinosa
Frequency Management Officer (OPS-SF)
Space Safety Programme Office (OPS-S)
Directorate of Operations

ESA/ESOC
Robert-Bosch-Str. 5
64293 Darmstadt, Germany
bruno.espinosa at esa.int<mailto:bruno.espinosa at esa.int>  | www.esa.int<http://www.esa.int/>
T +49 6151 90 4315

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