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<div class="WordSection1">
<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_2353.atx'. It contains the following changes:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">1)</span><span lang="EN-GB"> According to the IGS satellite metadata SINEX file released (modification of the 5. February 2025, (<a href="https://files.igs.org/pub/station/general/igs_satellite_metadata.snx?_gl=1*iefme9*_ga*NTU2NDgyMzczLjE3MzI0NzU1MTA.*_ga_Z5RH7R682C*MTczOTI4MDAzNS41LjEuMTczOTI4MDEwMS42MC4wLjA.">IGS
satellite metadata file</a>) following modifications have been made:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB"> Decommissioned:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB" style="font-family:"72 Monospace""> R06 (R803): decommission date: 2025 02 01 04 30 30<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB" style="font-family:"72 Monospace""> R26 (R733): decommission date: 2025 02 01 02 15 00<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB">Added<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB" style="font-family:"72 Monospace""> R06 (R733): valid from: 2025 02 01 05 00 00<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB" style="font-family:"72 Monospace""> R26 (R803): valid from: 2025 02 01 04 31 00<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB">2) 6 additional antenna type calibrations have been added:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB"><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoPlainText" style="margin-left:-15.75pt;mso-list:l3 level1 lfo3"><span lang="EN-GB">Three robot calibration from Geo++ GmbH provided by Shanghai Huace Navigation Technology Ltd. have been added:<o:p></o:p></span></li></ul>
<p class="MsoPlainText"><span lang="EN-GB" style="font-family:"72 Monospace""> </span>
<span lang="IT-CH" style="font-family:"72 Monospace"">CHCI89 NONE<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="IT-CH" style="font-family:"72 Monospace""> CHCI93 NONE<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="IT-CH" style="font-family:"72 Monospace""> GMTGAT10 NONE<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="IT-CH"><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoPlainText" style="margin-left:-15.75pt;mso-list:l3 level1 lfo3"><span lang="EN-GB">One additional robot antenna calibration was added<o:p></o:p></span></li></ul>
<p class="MsoPlainText" style="margin-left:2.25pt"><span lang="EN-GB" style="font-family:"72 Monospace""> GNXZENITH55 NONE<o:p></o:p></span></p>
<p class="MsoPlainText" style="margin-left:20.25pt"><span lang="EN-GB">According to GNXZENITH55 amd GMXZENITH60 are identical in construction. Therefore, calibrations values were copied from “GNXZENITH60 NONE”<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB"><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoPlainText" style="margin-left:-15.75pt;mso-list:l3 level1 lfo3"><span lang="EN-GB">One additional robot calibration from Geoscience Australia provided by Kurloo Technology Pty Ltd. has been added<o:p></o:p></span></li></ul>
<p class="MsoPlainText"><span lang="EN-GB" style="font-family:"72 Monospace""> KRL_FTYPE NONE<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB" style="font-family:"72 Monospace""><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoPlainText" style="margin-left:-15.75pt;mso-list:l3 level1 lfo3"><span lang="EN-GB">One additional robot calibration from Geo++ GmbH provided by Stonex SRL has been added<o:p></o:p></span></li></ul>
<p class="MsoPlainText"><span lang="EN-GB" style="font-family:"72 Monospace""> STXS880 NONE<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB" style="font-family:"72 Monospace""><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">The updated antenna correction model is available a<o:p></o:p></span></p>
<p class="MsoPlainText"><a href="https://files.igs.org/pub/station/general/igs20_2353.atx"><span lang="EN-US">https://files.igs.org/pub/station/general/igs20_2353.atx</span></a><span lang="EN-US">
<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">and<o:p></o:p></span></p>
<pre><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;mso-fareast-language:EN-US"><a href="https://files.igs.org/pub/station/general/igs20.atx.gz%20%0d">https://files.igs.org/pub/station/general/igs20.atx.gz <o:p></o:p></a></span></pre>
<p class="MsoPlainText"><span lang="EN-US">Best regards,<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">Arturo</span><span lang="EN-GB" style="font-family:"72 Monospace""><o:p></o:p></span></p>
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