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<body class='hmmessage'><div dir='ltr'>Dear Jean-Charles,<br><br>have you installed the latest patch of RTKLIB ? If not, then this may be the problem with your GPS+GLO observation data.<br><br>Regards,<br>Dimitris<br><br><div><hr id="stopSpelling">From: Jean-Charles.BREMAUD@sercel.com<br>To: foss-gps@lists.osgeo.org<br>Date: Tue, 1 Sep 2015 08:53:27 +0000<br>Subject: [FOSS-GPS] RTKlib using GPS and GLONASS<br><br>
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<p class="ecxMsoNormal">Hi,</p>
<p class="ecxMsoNormal"> </p>
<p class="ecxMsoNormal">I ‘m currently trying to use rtklib with GPS and GLONASS using L1 only signal, and I never got a fix.</p>
<p class="ecxMsoNormal">Various tests were performed in :</p>
<p class="ecxMsoListParagraph" style="text-indent:-18.0pt;"><span style="">-<span style="font:7.0pt "Times New Roman";">
</span></span>post-processing mode (RTKPOST) in static and single, with various types of receiver (Ublox M8 raw data , and from national French CORS stations)</p>
<p class="ecxMsoListParagraph" style="text-indent:-18.0pt;"><span style="">-<span style="font:7.0pt "Times New Roman";">
</span></span>real-time (RTKNAVI) in static and single (Ublox M8 are used as raw data sources)</p>
<p class="ecxMsoNormal">In GPS only all tests are OK, but when Glonass is activated no way to have a fix.</p>
<p class="ecxMsoNormal">For each epoch, the returned error message is always : <span style="font-size:9.0pt;font-family:"Courier New";color:black;">
point pos error (chi-square error nv=9 vv=882.4 cs=13.8)</span></p>
<p class="ecxMsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";color:black;"> </span></p>
<p class="ecxMsoNormal"><span style="color:black;">Using RTKMonitor in RTKNAVI, I can see that residuals are very high.</span></p>
<p class="ecxMsoNormal"><span style="color:black;"> </span></p>
<p class="ecxMsoNormal"><span style="color:black;">Any ideas, or suggestions ?</span></p>
<p class="ecxMsoNormal"><span style="color:black;">Thanks for your help.</span></p>
<p class="ecxMsoNormal"><span style="color:black;"> </span></p>
<p class="ecxMsoNormal"><span style="color:black;">Jean-Charles</span></p>
<p class="ecxMsoNormal"> </p>
<p class="ecxMsoNormal"> </p>
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