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<p>Dear Data Centers,</p>
<p>Please let Carey and I know as soon as possible how you are
currently generating the 'brdc' and 'BRDC00' files at your Data
Center. Are you merging all the '18n', '18g' , '_MN' station
navigation files with your own tools? with teqc? with someone
else's tool?</p>
<p>for example at CDDIS for Rinex 2 they <tt>use the </tt><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
lang="EN-US"><font color="#000000" size="-1"><tt>CCRINEXN and
CCRINEXG fortran programs for Rinex 2, and a new Rinex 3
merging script for the 'BRDC00IGS',</tt></font></span></p>
<p><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
lang="EN-US"><font color="#000000" size="-1"><tt>what do IGN,
BKG, SIO, GSSC, etc use? who simply copies the brdc from some
other DC? we need to know the details as we have detected
some issues with the 'merged' navigation files which leads
me to the second point below ...</tt></font><br>
</span></p>
<p><br>
</p>
<p>URGENT - Please exclude the following stations from your RINEX 2
navigation file merging process since these stations are mixing
CNAV and LNAV navigation messages which create inconsistent files
for the final users:</p>
<p>AREQ <br>
ARHT <br>
BOGT <br>
FAIR <br>
GLPS<br>
HRAO<br>
MOIU</p>
<p><br>
</p>
<p>Thanks for your collaboration,</p>
<pre wrap="">
Nacho Romero, Infrastructure Committee Chair
Carey Noll, Data Center Working Group Chair
David Maggert, IGS Network Coordinator
</pre>
<pre class="moz-signature" cols="72">--
Best regards,
Nacho
_______________________________________________________________
Ignacio (Nacho) Romero
Aerospace Engineer, PhD
CSC Ltd @ ESA/ESOC/OPS-GN
Satellite Navigation Engineer @ ESOC Navigation Support Office
IGS Infrastructure Committee Chair
<a class="moz-txt-link-abbreviated" href="http://www.navigation-office.esa.int">www.navigation-office.esa.int</a>
<a class="moz-txt-link-abbreviated" href="http://www.canaryspaceconsulting.co.uk">www.canaryspaceconsulting.co.uk</a>
_______________________________________________________________
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