[Sls-ocm] Charter draft for OCM working goup

Wed Aug 18 10:00:28 EDT 2010

Dear Nicolas,

thank you for your reply.
For the sake of clarity, I would like to point out that, in my mail of 
23.07, I was objecting to the minutes produced after the meeting, not to 
the content of your presentation.
I certainly don't ask to change the view of your Institution, as contained 
in such presentation, whether I agree or not. 
Nevertheless, it would be fair that the moms reflect all the opinions 
expressed during the meeting. 
The way they are now (as published in CWE), in my opinion, they don't 
mirror the discussions we had. 
If you wish, I can certainly provide you with a summary of the points I 
raised in Virginia Beach.

Best regards,
Massimo
---------------------------------------------------
Massimo Bertinelli
Communication Systems Engineer
ESA/Estec

Tel. +31 (0)71 5653435
--------------------------------------------------

From:
<Nicolas.Perlot at dlr.de>
To:
<Massimo.Bertinelli at esa.int>
Cc:
<sls-com at mailman.ccsds.org>, <sls-com-bounces at mailman.ccsds.org>
Date:
09/08/2010 11:41
Subject:
RE: [Sls-ocm] Charter draft for OCM working goup

Dear Massimo,

1) I agree that we should have a completed version of the white paper as 
soon as possible.

2) As you suggested, I will add the following point on the agenda of the 
Fall meeting (London): ?Discussion on the participation of ESA to the OCM 
work and on ESA internal approval process?.

3) About your objections during the Spring meeting:
If I remember correctly, you objected during my presentation on direct LEO 
downlinks that GEO satellites with optical payloads were already flying 
(ARTEMIS) or about to fly (Alphasat, EDRS). J-L. Gerner also mentioned the 
need for onboard memory for direct optical downlinks. I agree. But these 
remarks do not change the view of my institute DLR-IKN (and also my view) 
on direct LEO downlinks. What I was presenting was the view of my 
institute DLR-IKN, just like JPL, NICT and JAXA presented their views on 
optical links. If ESA has different views which you are aware of, you are 
welcome to present them.
So the document I presented was a DLR-IKN document supporting CCSDS 
discussion, but it was not a CCSDS document. So it does not have to 
contain your remarks.

4)  I suggest to avoid the Post Scriptum in e-mails and to keep the 
message content before the signature: I saw your P.S. only the second time 
I read your message.  I recognize, though, the usefulness of P.S. for 
paper letters.

Regards,
Nicolas 

Chair of OCM-SIG

-- 
Nicolas Perlot, Ph.D.
Digital Networks Section,
Optical Communications Group

German Aerospace Center (DLR)                 phone: ++49/8153/281836
Institute of Communications and Navigation    fax:   ++49/8153/282844
Oberpfaffenhofen, P.O. Box 11 16              email: nicolas.perlot at dlr.de
82234 Wessling, Germany                       http://www.dlr.de/KN/KN-DN/ 

From: Massimo.Bertinelli at esa.int [mailto:Massimo.Bertinelli at esa.int] 
Sent: Freitag, 23. Juli 2010 15:12
To: Perlot, Nicolas
Cc: sls-com at mailman.ccsds.org; sls-com-bounces at mailman.ccsds.org
Subject: Re: [Sls-ocm] Charter draft for OCM working goup

Dear Nicolas, 
thank you for the draft. 

As an ESA SIG member, it is my opinion that the creation of a new WG is 
still premature, while the SIG should first finish the work it was 
supposed to do. 
In particular, I believe that the SIG should finalize the white book on 
"Optical coding and modulation". Eventually, once the material is more 
mature, a Green Book may be delivered. 

In any case, some more time and supporting material will be necessary to 
understand whether ESA can partecipate to the work, due to the internal 
approval process. 
I would suggest coming back to this at the London meeting, after the 
technical discussions are over. 

Best regards, 
Massimo 

P.S. By the way, at the Virginia Beach meeting I raised a number of 
objections to the assumptions put forward for some of the scenarios, i.e. 
LEO-ground, but I couldn't find any trace of them 
         in the minutes. 

---------------------------------------------------
Massimo Bertinelli
Communication Systems Engineer
ESA/Estec

Tel. +31 (0)71 5653435
-------------------------------------------------- 

<Nicolas.Perlot at dlr.de> 
Sent by: sls-com-bounces at mailman.ccsds.org 
04/07/2010 13:56 

To
<sls-com at mailman.ccsds.org> 
cc

Subject
[Sls-ocm] Charter draft for OCM working goup

Dear Lasercom people,

Find attached a draft of the charter for the creation of a CCSDS working 
group "Optical coding and modulations".
Please send me your feedback within 3 weeks (till July, 26th). If your 
agency is a CCSDS member agency, check whether it indeed supports the 
specific scenarios as established in the last column of the scenario 
table.

Regards,

Nicolas Perlot
Chair of the SIG "OCM"
[attachment "Proposed_Charter_OCM_WG.doc" deleted by Massimo 
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