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<p class="MsoNormal"><span lang="EN-US">Dear colleagues<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The absolute IGS antenna correction file (igs20_wwww.atx) has been updated.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The new release is called 'igs20_2354.atx'. It contains the following changes:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1) Update of the preliminary PCO for GPS BLOCK IIIA satellite G079 (G28) based on the disclosed PCOs. In order to be compatible with the ITRF2020 scale<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> The z-PCO has been modified by adding the scale offset of +8.9 cm. Disclosed values:
</span><a href="https://www.navcen.uscg.gov/gps-technical-references"><span lang="EN-GB">GPS Technical References | Navigation Center</span></a><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"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">2) Update of the preliminary PCO and PV pattern for Galileo satellites E225 (E29), E226 (E23), E227 (E06), and E232 (E16) according to the disclosed pattern (GSAT_2340.atx). z-PCOs are adapted for scale compatibility
with the ITRF2020 by adding an offset of +15.6 cm:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> Disclosed values: </span><a href="https://www.gsc-europa.eu/support-to-developers/galileo-satellite-metadata"><span lang="EN-GB">Galileo Satellite Metadata | European GNSS Service Centre (GSC)</span></a><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="m6936121351531566283msoplaintext"><span lang="EN-US">The updated antenna correction model is available a</span><span lang="EN-GB"><o:p></o:p></span></p>
<p class="m6936121351531566283msoplaintext"><a href="https://files.igs.org/pub/station/general/igs20_2354.atx"><span lang="EN-GB">https://files.igs.org/pub/station/general/igs20_2354.atx</span></a><span lang="EN-GB">
<o:p></o:p></span></p>
<p class="m6936121351531566283msoplaintext"><span lang="EN-US">and</span><span lang="EN-GB"><o:p></o:p></span></p>
<pre><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"><a href="https://files.igs.org/pub/station/general/igs20.atx.gz%20%0d" target="_blank"><span lang="DE-CH">https://files.igs.org/pub/station/general/igs20.atx.gz </span></a></span><o:p></o:p></pre>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Arturo<o:p></o:p></span></p>
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