<div dir="ltr"><br><div class="gmail_quote"><br><div dir="ltr"><div>In the call for this meeting, it says:<br></div><div><br></div><div>If you wish to submit a proposal for a short talk during the forum
please contact <b><a href="mailto:Lunar-Interoperability-Forum@mailman.ccsds.org" target="_blank">Lunar-Interoperability-Forum@mailman.ccsds.org</a></b>. <br></div><div><br></div><div>So I am doing that here.</div><div><br></div><div>Regards</div><div>Marshall Eubanks<br></div><div><br></div><div>
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The new lunar position, navigation and timing reference system</p>
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T. M. Eubanks, Space Initiatives Inc<br></p>
<p style="line-height:100%;margin-bottom:0in;background:transparent">
The lunar PNT system is currently tied to the terrestrial reference
system, specifically the ICRF, the IRTF and Earth rotation monitoring
under the IERS (the author helped to initiate all three of these
efforts). However, in the longer term this reference system
maintenance will be transferred to the lunar surface and lunar orbit,
both because that is where it is needed, and because the Moon is
dynamically quieter than the Earth, without our planet's atmospheric
and ocean currents.</p>
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While the Moon is dynamically quieter than the Earth, it is not
totally static, with meter-level irregular motions over year and
multi-year periods. Development of the lunar reference system thus
requires improved monitoring of lunar surface and whole-body
dynamics; the new lunar PNT system will be both a scientific, and an
engineering, effort.
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Making this lunar PNT reference system widely available will require
interoperable navigation beacons, such as the interoperable wide band
continuum COMPASS beacons we are developing, lunar geodetic
satellites, and also a common reference frame standard, such as was
developed for the Earth by the IERS in the 1980’s and afterwards.</p>
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