[IGS-DCWG-207] data files removal and QC

Nacho Romero nacho at canaryspaceconsulting.co.uk
Tue Oct 22 07:50:28 PDT 2019


Dear Data Centers,

Please note that a recent IGS station file has been published and it is 
incorrect. The file Rinex 2 ramo2940.19d.Z needs to be removed from your 
data directories, please.

CDDIS has already removed the file please remove the file from the other 
data centers. Thanks.

 >teqc +qcq ramo2940.19o

teqc: failure to read '     2.11           OBSERVATION DATA    M 
(MIXED)           RINEX VERSION / TYPE' on line 12 of 'ramo2940.19o'
     (bad scan of RINEX version, type, and system or multiple 'RINEX 
VERSION / TYPE' lines) ... exiting

Also please implement some QC at your Data Center so that you only 
publish correct Rinex 2/Rinex 3 files and that bad station files do not 
get published.

This file already caused problems for some of our users so avoiding 
these issues should be a priority.

I have contacted the station operator as well and hopefully they will 
also implement some QC before they publish files. On the other hand this 
is the second time this year this happens from the same site (previous 
incorrect file was ramo2260.19d.Z) so we need to have more than one line 
of defense against bad data files.

Thanks and 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
www.navigation-office.esa.int
www.canaryspaceconsulting.co.uk
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