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<p class="MsoNormal">Andrea,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I totally agree with Matt below and look forward to further collaboration between our WGs on these matters.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal">Greg<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:12.0pt;color:black">From:
</span></b><span lang="EN-GB" style="font-size:12.0pt;color:black">Matthew Cosby <Matt.Cosby@Goonhilly.org><br>
<b>Date: </b>Thursday, November 4, 2021 at 2:47 AM<br>
<b>To: </b>"Andrea.Modenini@esa.int" <Andrea.Modenini@esa.int>, "Kazz, Greg J (US 312B)" <greg.j.kazz@jpl.nasa.gov><br>
<b>Cc: </b>Space Link Coding & Synchronization Working Group <sls-cc@mailman.ccsds.org>, "Bernard.L.Edwards@nasa.gov" <Bernard.L.Edwards@nasa.gov>, "Ignacio.Aguilar.Sanchez@esa.int" <Ignacio.Aguilar.Sanchez@esa.int>, Gilles Moury <Gilles.Moury@cnes.fr><br>
<b>Subject: </b>[EXTERNAL] RE: [SLS-CC] C&S Fall meeting 2021 - discussion on VLF and AOS FHEC<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB">Hi </span>Andrea,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you for the heads up on these discussions. I agree that “AOS FHEC” is not clear in the document and needs to be fixed. I also welcome your proposal to provide draft text for our review (as you are the experts!). It would be interested
to know how people have implemented it in the past (and future).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">VLF – maybe a more interesting topic, and your approach of a joint meeting with SLP and Optica WG is the best way forward.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards, Matt<span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="color:black"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="color:black">Matthew Cosby</span></b><span lang="EN-GB" style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="layout-grid-mode:line">Chief Technology Officer
<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="color:black">Goonhilly Earth Station Ltd<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="color:black"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:black"><img width="565" height="141" style="width:5.8854in;height:1.4687in" id="Picture_x0020_1" src="cid:image001.jpg@01D7D16F.12093F90" alt="signature_1318327456"></span><span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Andrea.Modenini@esa.int <Andrea.Modenini@esa.int>
<br>
<b>Sent:</b> 04 November 2021 09:39<br>
<b>To:</b> Greg Kazz <Greg.J.Kazz@jpl.nasa.gov>; Matthew Cosby <Matt.Cosby@Goonhilly.org><br>
<b>Cc:</b> Space Link Coding & Synchronization Working Group <sls-cc@mailman.ccsds.org>; Bernard.L.Edwards@nasa.gov; Ignacio.Aguilar.Sanchez@esa.int; Gilles Moury <Gilles.Moury@cnes.fr><br>
<b>Subject:</b> [SLS-CC] C&S Fall meeting 2021 - discussion on VLF and AOS FHEC<o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif">Dear Greg and Matt,</span><span lang="EN-GB">
<br>
</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif"> by means of this email I would to bring your attention on two main agenda items that were discussed during C&S Fall meeting 2021 (MoM can be found in attachment).</span><span lang="EN-GB">
<br>
<br>
</span><b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif">AOS FHEC</span></b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif">: the recommendation of the C&S WG is to keep the FHEC (since it will be adopted
by future missions), but to propose to your WG a possible update of the Blue Book (for avoiding ambiguity on the Virtual Fill to be done on the shortened Reed Solomon). In light of this, we have an AI to provide a draft of the changes that you should consider
for implementationg.</span><span lang="EN-GB"> <br>
</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif">Additionally, we are planning to check with Data handling manufacturer what kind of virtual fill was implemented so far, for possibly avoiding to create a non-compliance to existing
units.</span><span lang="EN-GB"> <br>
<br>
</span><b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif">VLF</span></b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif">: we started the discussion on the topic (see MoM Section 2.5.2), in particular for
implementing a slicer for enabling VLF. </span><span lang="EN-GB"><br>
</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif">For next Spring meeting, we plan to draft a concept paper for having a dedicated project, and would like to have a joint meeting with your WG for discussing possible technical
solutions (in particular the frame synchronisation). </span><span lang="EN-GB"><br>
</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif">It could be worth to invite also the Optical WG, since I understand they have a similar discussion on-going (for this,
<b>I put in CC Bernard</b>)</span><span lang="EN-GB"> <br>
<br>
<br>
</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif">Kind Regards</span><span lang="EN-GB">
<br>
<br>
<br>
</span><b><span lang="EN-GB" style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:gray">ESA - European Space Agency</span></b><span lang="EN-GB">
<br>
</span><b><span lang="EN-GB" style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:#00A1E0">Ph.D. Andrea Modenini</span></b><b><span lang="EN-GB" style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:gray"><br>
TT&C Communications Systems Engineer</span></b><b><span lang="EN-GB" style="font-size:12.0pt;font-family:"Tms Rmn",serif">
</span></b><span lang="EN-GB" style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:gray"><br>
TT&C and PDT Systems & Techniques Section (TEC-EST)<br>
RF Systems Division<b><br>
ESTEC</b><br>
Keplerlaan 1, PO Box 299<br>
NL-2200 AG Noordwijk, The Netherlands</span><u><span lang="EN-GB" style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:blue"><br>
</span></u><span lang="EN-GB" style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:gray"><a href="mailto:andrea.modenini@esa.int">andrea.modenini@esa.int</a> |
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T +31 71 56 53439, M +31 6 484 56 527</span><span lang="EN-GB"> <o:p></o:p></span></p>
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