DGFI ITRS Combination Centre

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DGFI ITRS Combination Centre

Сообщение Александр Устинов » 09 июл 2015, 18:45

ITRS Combination Centre
DGFI has taken the responsibility for an ITRS Combination Centre within the International Earth Rotation and Reference Systems Service (IERS) since 2001.

The ITRS Combination Centre is responsible for the computation of terrestrial reference frame realizations (ITRF) through the combination of space geodetic data sets (GPS, SLR, VLBI, DORIS) provided by the corresponding techniques' services (IGS, ILRS, IVS, IDS). DGFI has computed the following realizations of the terrestrial reference system:

ITRS Realization 2003
ITRF2005 Solution of DGFI
ITRS Realization 2008: DTRF2008

http://www.dgfi.tum.de/en/international ... on-centre/
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Re: DGFI ITRS Combination Centre

Сообщение Александр Устинов » 09 июл 2015, 18:48

Seitz M., Angermann D., Bloßfeld M., Drewes H., Gerstl M. (2012) The 2008 DGFI Realization of the ITRS: DTRF2008. Journal of Geodesy, Volume 86, Issue 12, pp 1097-1123
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Re: DGFI ITRS Combination Centre

Сообщение Александр Устинов » 30 авг 2016, 15:43

Опубликована DTRF2014

https://doi.pangaea.de/10.1594/PANGAEA.864046
Dear colleagues,

we are happy to inform you about the publication of the final version of
the ITRS realization of DGFI-TUM called DTRF2014. The SINEX-files are
available via the PANGAEA data portal at
http://doi.pangaea.de/10.1594/PANGAEA.864046

The DTRF2014 is the first ITRS realization considering corrections for
non-tidal atmospheric and hydrological loading. Respective loading time
series for each station were provided by Tonie van Dam (GGFC). They are
provided together with the DTRF2014. The loading time series are based
on the atmosphere model NCEP and the hydological model GLDAS.

Please note: In contrast to the final DTRF2014, the preliminary solution
published by the end of 2015 was computed using a classical approach
without correcting for non-tidal loading.

The DTRF2014 is provided in four technique-specific SINEX files (i.e.
separate for GNSS, VLBI, SLR and DORIS) as well as in one common SINEX
file (all techniques). The zipped files on the PANGAEA server are named

- DTRF2014.snx.gz
- DTRF2014_GPS.snx.gz
- DTRF2014_VLBI.snx.gz
- DTRF2014_SLR.snx.gz
- DTRF2014_DORIS.snx.gz

They contain estimated station coordinates and velocities for the
reference epoch 2005.0 as well as the corresponding full
variance/co-variance matrix.

Consistently estimated EOP are available in the file DTRF2014_EOP-F2.DAT.

In addition, in order to best approximate the quasi-instantaneous
station position at each epoch, we provide station-specific models for
the correction of the station positions computed from from the linear
model. These station-specific models are:
- non-tidal loading time series for each station; stored in the archives
NT-ATML.zip and NT-CWSL.zip,
- residual time series resulting from an epoch-wise transformation of
the technique-specific solutions w.r.t. the combined DTRF2014 solution;
stored in the archive RESID.zip,
- time series of origin translations derived from a transformation of
the weekly SLR station network w.r.t. the combined DTRF2014 solution;
stored in the archive DTRF2014_SLRorigin.zip.

A manual for the application of these corrections is provided
(DTRF2014_readme.pdf).

Further information on the DTRF2014 can be found on the webpages of
DGFI-TUM:
http://www.dgfi.tum.de/science-data-products/dtrf2014/
http://www.dgfi.tum.de/DTRF2014_en

When using DTRF2014 data, please cite:
Seitz M., Bloßfeld M., Angermann D., Schmid R., Gerstl M., Seitz F.: The
new DGFI-TUM realization of the ITRS: DTRF2014 (data). Deutsches
Geodätisches Forschungsinstitut, Munich, doi:10.1594/PANGAEA.864046, 2016.

If you have further questions on the DTRF2014 or about the computation
of quasi-instantaneous station coordinates, don’t hesitate to contact
manuela.seitz@tum.de or mathis.blossfeld@tum.de.

With best regards,
on behalf of the DGFI-TUM ITRS CC team,
Manuela Seitz

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