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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH">Dear colleagues<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH">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" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH">The new release is called 'igs20_2272.atx'. It contains the following<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH">changes:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH">1) According to
</span><span class="MsoHyperlink"><span lang="EN-US" style="mso-fareast-language:DE-CH"><a href="https://igs.org/mgex/constellations/#beidou">MGEX Constellations – International GNSS Service (igs.org)</a></span></span><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH">
a new BEIDOU-3G-CAST satellite was launched on the 5. Mai 2023.<br>
Following entry has been added:<o:p></o:p></span></p>
<p class="MsoListParagraph"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"> C62 (C231): 05. Mai 2023<o:p></o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"> As preliminary PCOs the values from BEIDOU-3G-CAST C217 has been used.<o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black">2) One additional antenna type calibration has been added that was performed by Geo++ GmbH<o:p></o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"> - One robot calibration provided by Trimble Inc. has been added:<o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"> TRMR580 NONE<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black">The updated antenna correction model is available at<o:p></o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"><a href="https://files.igs.org/pub/station/general/igs20_2272.atx%0d">https://files.igs.org/pub/station/general/igs20_2272.atx<o:p></o:p></a></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black">and<o:p></o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></pre>
<pre><span style="font-family:"Arial",sans-serif;color:black"><a href="https://files.igs.org/pub/station/general/igs20.atx"><span lang="EN-US">https://files.igs.org/pub/station/general/igs20.atx</span></a></span><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"><o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black">With best regards,<o:p></o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black">Arturo Villiger<o:p></o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black">(arturo.villiger@swisstopo.ch)<o:p></o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></pre>
<pre><span lang="EN-US" style="font-family:"Arial",sans-serif;color:black">on behalf of the IGS Antenna Working Group<o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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