<span style=" font-size:10pt;font-family:sans-serif">Dear all, </span>
<br><span style=" font-size:10pt;font-family:sans-serif"> please find
in attachment ESA feedback to NASA/GSFC replies on AI-20_03 and -04.</span><span style=" font-size:12pt">
</span>
<br>
<br><span style=" font-size:12pt">Kind Regards</span>
<br>
<br>
<br><span style=" font-size:10pt;font-family:Calibri"><b>AI-20_02</b> Indicate
if the recommendation should be for generic earth-to-space links or only
for earth-to-moon links</span><span style=" font-size:10pt;color:red;font-family:Calibri"><br>
NASA/GSFC doesn't know of any planned missions with the 22 GHz uplink that
are not lunar missions, but would be ok with this being generic for all
near-Earth missions.</span><span style=" font-size:10pt;color:blue;font-family:Calibri"><br>
ESA as well doesn't know of any planned missions with the 22 GHz uplink
other than Lunar, but will support to make the recommendation generic for
all near-Earth missions as well.</span><span style=" font-size:12pt"><br>
</span><span style=" font-size:10pt;font-family:Calibri"><b><br>
AI-20_03</b> Indicate if the included modulation schemes and data rates
are sound</span><span style=" font-size:10pt;color:red;font-family:Calibri"><br>
On the proposed modulations, GSFC has the following questions:</span><span style=" font-size:12pt">
</span>
<ul>
<li><span style=" font-size:10pt;color:red;font-family:Calibri">What is
the driver for the higher order mods on the uplink? </span>
<ul>
<li><span style=" font-size:10pt;color:red;font-family:Calibri">Are there
any mission profiles? </span>
<li><span style=" font-size:10pt;color:red;font-family:Calibri">Anyone
cares about spectrum on uplink?</span></ul>
<li><span style=" font-size:10pt;color:red;font-family:Calibri">What is
the requirement on the failure rates for the higher order mods?</span><span style=" font-size:12pt">
</span>
<li><span style=" font-size:10pt;color:red;font-family:Calibri">Do the
higher order mods for uplink need to be further analyzed?</span></ul><span style=" font-size:10pt;color:blue;font-family:Calibri">In
ESA opinion, taking into account the rising interest in Lunar missions
by space agencies, higher order modulations (HOMs) would be a mean to preserve
the available spectrum in case of future RFI risks.<br>
Although on today's date there are no mission profiles asking for HOMs,
it is understood that manned mission could require hundred of Mbps, with
coding rate as low as 1/2 (see IOAG report on Future lunar mission). Considering
that the available spectrum is just 600 MHz, and spatial separation between
Lunar missions could be limited, ESA believes some HOMs (not all of them)
should be included into the standard as possible way to tackle RFI.<br>
A possible starting point, could be to adopt the same ACMs that are adopted
in CCSDS 401 (2.4.17A) B-3, up to 8PSK, that also make some harmonisation
with Near Earth Space-to-Earth links.</span><span style=" font-size:12pt"><br>
</span>
<br>
<br><span style=" font-size:8pt;color:#808080;font-family:Verdana"><b>HE
Space Operations for ESA - European Space Agency</b></span>
<br><span style=" font-size:8pt;color:#00a1e0;font-family:Verdana"><b>Ph.D.
Andrea Modenini</b></span><span style=" font-size:8pt;color:#808080;font-family:Verdana"><b><br>
Communication Systems & Technologies Engineer</b></span><span style=" font-size:12pt;font-family:Tms Rmn"><b>
</b></span><span style=" font-size:8pt;color:#808080;font-family:Verdana"><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><span style=" font-size:8pt;color:blue;font-family:Verdana"><u><br>
</u></span><span style=" font-size:8pt;color:#808080;font-family:Verdana">andrea.modenini@esa.int
| </span><a href=http://www.esa.int/><span style=" font-size:8pt;color:#8f8f8f;font-family:Verdana"><u>www.esa.int</u></span></a><span style=" font-size:8pt;color:#808080;font-family:Verdana"><br>
T +31 71 56 53439</span>
<br>
<br>
<br>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">From:
</span><span style=" font-size:9pt;font-family:sans-serif">Enrico.Vassallo@esa.int</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">To:
</span><span style=" font-size:9pt;font-family:sans-serif">sls-rfm@mailman.ccsds.org</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Date:
</span><span style=" font-size:9pt;font-family:sans-serif">14-12-20
08:57</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Subject:
</span><span style=" font-size:9pt;font-family:sans-serif">[Sls-rfm]
Fw: GSFC's Response to RFM Action Items</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Sent
by: </span><span style=" font-size:9pt;font-family:sans-serif">"SLS-RFM"
<sls-rfm-bounces@mailman.ccsds.org></span>
<br>
<hr noshade>
<br>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">Dear All,</span><span style=" font-size:12pt">
<br>
</span><span style=" font-size:10pt;font-family:sans-serif"><br>
please find below the response by NASA/GSFC on AI-20_02, -03 and -04.</span><span style=" font-size:12pt">
<br>
</span><span style=" font-size:10pt;font-family:sans-serif"><br>
I guess that response to AI_20-03 may trigger further actions on the proponents
of the relevant recommendation.</span><span style=" font-size:12pt"> <br>
</span><span style=" font-size:10pt;font-family:sans-serif"><br>
Best Regards, Enrico</span><span style=" font-size:12pt"> <br>
</span><span style=" font-size:9pt;color:#800080;font-family:sans-serif"><br>
----- Forwarded by Enrico Vassallo/esoc/ESA on 14/12/20 08:53 -----</span><span style=" font-size:12pt">
<br>
</span><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif"><br>
From: </span><span style=" font-size:9pt;font-family:sans-serif">"Lee,
Wing-tsz (GSFC-5670)" <wing-tsz.lee-1@nasa.gov></span><span style=" font-size:12pt">
</span><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif"><br>
To: </span><span style=" font-size:9pt;font-family:sans-serif">"Enrico.Vassallo@esa.int"
<Enrico.Vassallo@esa.int></span><span style=" font-size:12pt"> </span><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif"><br>
Cc: </span><span style=" font-size:9pt;font-family:sans-serif">"Fong,
Wai H. (GSFC-5670)" <wai.h.fong@nasa.gov>, "Rodriguez,
Shannon (GSFC-5670)" <shannon.rodriguez-1@nasa.gov>, "Sank,
Victor J. (GSFC-567.0)[SCIENCE SYSTEMS AND APPLICATIONS INC]" <victor.j.sank@nasa.gov>,
"Huang, Wei-Chung. (GSFC-5670)" <weichung.huang@nasa.gov></span><span style=" font-size:12pt">
</span><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif"><br>
Date: </span><span style=" font-size:9pt;font-family:sans-serif">11/12/20
19:58</span><span style=" font-size:12pt"> </span><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif"><br>
Subject: </span><span style=" font-size:9pt;font-family:sans-serif">GSFC's
Response to RFM Action Items</span><span style=" font-size:12pt"> <br>
</span>
<hr noshade><span style=" font-size:12pt"><br>
</span>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">Enrico,</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">Below
is GSFC’s response to the RFM WG action items:</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"><b>AI-20_02</b>
Indicate if the recommendation should be for
generic earth-to-space links or only for earth-to-moon links</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;color:red;font-family:Calibri">NASA/GSFC
doesn't know of any planned missions with the 22 GHz uplink that are not
lunar missions, but would be ok with this being generic for all near-Earth
missions.</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"><b>AI-20_03</b>
Indicate if the included modulation schemes
and data rates are sound</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;color:red;font-family:Calibri">On
the proposed modulations, GSFC has the following questions:</span></p>
<ul>
<li><span style=" font-size:11pt;color:red;font-family:Calibri">What is
the driver for the higher order mods on the uplink? </span>
<ul>
<li><span style=" font-size:11pt;color:red;font-family:Calibri">Are there
any mission profiles? </span>
<li><span style=" font-size:11pt;color:red;font-family:Calibri">Anyone
cares about spectrum on uplink?</span></ul>
<li><span style=" font-size:11pt;color:red;font-family:Calibri">What is
the requirement on the failure rates for the higher order mods?</span><span style=" font-size:12pt">
</span>
<li><span style=" font-size:11pt;color:red;font-family:Calibri">Do the
higher order mods for uplink need to be further analyzed?</span></ul><span style=" font-size:11pt;color:red;font-family:Calibri"> </span><span style=" font-size:12pt">
</span>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"><b>AI-20_04</b>
Provide additional considering and recommends
as needed</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;color:red;font-family:Calibri">None,
since we don't have any other mission profiles to consider.</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">Thank
you,</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">GSFC
RFM WG Members (Shannon, Wai, Victor, Wing)</span></p>
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<PRE>This message is intended only for the recipient(s) named above. It may contain proprietary information and/or
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</PRE>