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<p class="MsoPlainText"><span style="font-family:"Courier New"">Dear colleagues<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New"">The absolute IGS antenna correction file (igs14_wwww.atx) has been updated.<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New"">The new release is called 'igs14_2233.atx'. It contains the following
<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New"">change:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New"">1) According to https://russianspaceweb.com/glonass-k-17.html<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""> and <a href="https://www.glonass-iac.ru/en/sostavOG/">
<span style="color:windowtext;text-decoration:none">https://www.glonass-iac.ru/en/sostavOG/</span></a> a new GLONASS-K1
<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""> satellites satellite (R807, COSPAR ID 2022-130A) was launched<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""> on 10. October 2022. Therefore, the following satellite has<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""> been added to igs14.atx:<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""> R25 (R807): 10. October 2022<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""> The following PRELIMINARY phase center offset (PCO) values were assigned<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""> (the z-PCO being the mean value of R801 and R802 rounded to 5 cm):<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="FR-CH" style="font-family:"Courier New""> PCO_X = 0.0 cm<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="FR-CH" style="font-family:"Courier New""> PCO_Y = 0.0 cm<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:"Courier New""> PCO_Z = 205.0 cm<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">2) </span><span style="font-family:"Courier New";color:black">According to NANU 2022086 , BLOCK IIR-M satellite SVN49 (2009-014A) will approximately on 27.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";color:black"> October 2022 resume transmitting utilizing PRN 28. Therefore, the following satellite has been<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";color:black"> added to the igs14.atx starting from 26. October 2022:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";color:black"> G28 (049): 26. October 2022<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";color:black"><o:p> </o:p></span></p>
<p style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Courier New";color:black;mso-fareast-language:EN-US">NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2022086 NANU TYPE: GENERAL<br>
*** GENERAL MESSAGE TO ALL GPS USERS ***<br>
On approximately 27 OCT 2022, SVN49 will resume transmitting L-band utilizing PRN28; at L-band activation, SVN49/PRN28 will be unusable until further notice (additionally, no broadcast almanacs will include SVN49/PRN28 until further notice).<br>
*** GENERAL MESSAGE TO ALL GPS USERS ***<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";color:black">POC: CIVILIAN - NAVCEN AT 703-313-5900,
<a href="HTTPS://WWW.NAVCEN.USCG.GOV"><span style="color:black;text-decoration:none">HTTPS://WWW.NAVCEN.USCG.GOV</span></a><br>
MILITARY - GPS OPERATIONS CENTER at <a href="HTTPS://GPS.AFSPC.AF.MIL/GPSOC"><span style="color:black;text-decoration:none">HTTPS://GPS.AFSPC.AF.MIL/GPSOC</span></a>, DSN 560-2541,<br>
COMM 719-567-2541, <a href="mailto:gpsoperationscenter@us.af.mil"><span style="color:black;text-decoration:none">gpsoperationscenter@us.af.mil</span></a>,
<a href="HTTPS://GPS.AFSPC.AF.MIL"><span style="color:black;text-decoration:none">HTTPS://GPS.AFSPC.AF.MIL</span></a>
<br>
MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3526. COMM 805-606-3526.<br>
<a href="mailto:JSPOCCOMBATOPS@US.AF.MIL"><span style="color:black;text-decoration:none">JSPOCCOMBATOPS@US.AF.MIL</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";color:black">3) According to NANU 2021035, BLOCK IIR-A satellite SVN44 (2000-040A) has been. According to CODE the satellite has stopped transmitting on 10. October 2022. The following decommission
date has been added: </span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";color:black"> G28 (G044): 10. October 2022</span><span style="color:black">
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">3) One additional robot calibration has been added:<o:p></o:p></span></p>
<pre><span style="font-size:11.0pt;mso-fareast-language:EN-US"> - ESVUA92 NONE (copied from STXSA1000 NONE, <o:p></o:p></span></pre>
<pre><span style="font-size:11.0pt;mso-fareast-language:EN-US"> verified by Leibniz Universität Hannover, Institut für Erdmessung (ife))<o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
<p class="MsoPlainText">The updated antenna correction model is available at<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoPlainText"><a href="https://files.igs.org/pub/station/general/igs14_2233.atx">https://files.igs.org/pub/station/general/igs14_2233.atx</a>
<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">and<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoNormal"><a href="https://files.igs.org/pub/station/general/igs14.atx">https://files.igs.org/pub/station/general/igs14.atx</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoPlainText">With best regards,<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Arturo Villiger<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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