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<p><tt>Hi Nacho and colleagues,</tt></p>
<p><tt>Some points from my side:</tt></p>
<p><tt>1. Blaming single station providers for distributing corrupt
data is not a step we should take. Everyone relies on the
manufacturers and their software. Therefore we should find a way
to check such files before splicing them. There are already
solutions out there, e.g. gfzrnx. Manually removing stations
(for whatever period) is not sustainable if you manage more than
400 stations. Those files should have never been put on the FTP
or not considered for merging.<br>
</tt></p>
<p><tt>2. There are more stations in the network, that produce
corrupt navigation files for Galileo. This affects all Javad's
with JPS2RIN before version 2.0.168. So we should advice those
operators to update their JPS2RIN version.</tt></p>
<p><tt>All the best,</tt></p>
<p><tt>Markus<br>
</tt></p>
<p><tt><br>
</tt></p>
<p><tt><br>
</tt></p>
<p><tt><br>
</tt></p>
<div class="moz-cite-prefix">Am 10/04/2019 um 11:43 schrieb Nacho
Romero:<br>
</div>
<blockquote type="cite"
cite="mid:06e7acdd-3014-cf91-e743-1847f06988b6@canaryspaceconsulting.co.uk">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<p>Dear Data Centers,</p>
<p>From some hour ago station SVTL is corrupting the merged
navigation files across the IGS due to lingering rollover
effects, this affectes several automatic systems around the
world. The station SVTL is producing very incorrect navigation
files with the catastrophic effect of setting more than half of
the GPS satellites as unhealthy which is VERY wrong!</p>
<p>Please exclude all SVTL data files from the navigation file
merging process (all brdc/ hour files) until further notice and
re-generate the recent merged navigation files . Thanks.</p>
<p>This is what the svtl files contain ... a mess!! I have already
written to the station to stop sending incorrect files and to
take measures to correct the problem.<br>
</p>
<p> 167: nacho@mac03> more svtl100b.19n <br>
2.10 N: GPS NAV DATA
RINEX VERSION / TYPE<br>
JPS2RIN V1.2.25 JAVAD GNSS 10-Apr-2019 01:59 PGM
/ RUN BY / DATE <br>
.1118D-07 .1490D-07 -.5960D-07 -.5960D-07 ION
ALPHA<br>
.8806D+05 .1638D+05 -.1966D+06 -.1311D+06 ION
BETA<br>
-.372529029846D-08 -.621724893790D-14 503808 0
DELTA-UTC: A0,A1,T,W<br>
18 LEAP
SECONDS<br>
END
OF HEADER <br>
1 99 8 25 2 0 0.0 -.198496971279D-03 -.807176547823D-11
.000000000000D+00<br>
.690000000000D+02 -.310312500000D+02 .407695553585D-08
.264307016689D+01<br>
-.169686973095D-05 .863176246639D-02 .101216137409D-04
.515366104698D+04<br>
.266400000000D+06 -.577419996262D-07 -.210293822457D+01
-.143423676491D-06<br>
.974915508161D+00 .191937500000D+03 .686769954200D+00
-.760960268478D-08<br>
.316798910232D-09 .100000000000D+01 .102400000000D+04
.000000000000D+00<br>
.200000000000D+01 .000000000000D+00 .558793544769D-08
.690000000000D+02<br>
.266400000000D+06<br>
1 19 4 10 1 30 0.0 -.198482477572D-03 -.807531819191D-11
.000000000000D+00<br>
.114000000000D+03 -.256015625000D+02 .409838499990D-08
.238064968064D+01<br>
-.134389847517D-05 .863080541603D-02 .100927427411D-04
.515366096307D+04<br>
.264600000000D+06 -.110827386379D-06 -.210292451118D+01
-.138767063618D-06<br>
.974914759879D+00 .192453125000D+03 .686646588512D+00
-.764901211094D-08<br>
.315727437029D-09 .100000000000D+01 .204800000000D+04
.000000000000D+00<br>
.230400000000D+04 .100000000000D+01 .558793544769D-08
.114000000000D+03<br>
.264600000000D+06<br>
<br>
</p>
<p><br>
</p>
<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" moz-do-not-send="true">www.navigation-office.esa.int</a>
<a class="moz-txt-link-abbreviated" href="http://www.canaryspaceconsulting.co.uk" moz-do-not-send="true">www.canaryspaceconsulting.co.uk</a>
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