The EUREF reference frame solution is the most accurate and up-to-date (updated each 15 weeks) positions and velocities of the EPN GNSS stations.
The EUREF reference frame solution is designed for maintaining the ETRS89 and it provides the positions and velocities of the EPN reference stations
to be used to tie of a GNSS network into the ETRS89 or ITRS. The Tool for Reference Station Selection based on the station classification of the EPN stations is available to help the users select the most suitable EPN reference stations for their specific project.
EPN station positions and velocities
(select a station)
ACOR00ESP
ADAR00GBR
AGRN00ITA
AJAC00FRA
ALAC00ESP
ALBA00ESP
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ALCI00UKR
ALME00ESP
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AMMN00JOR
ANK200TUR
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ANKR00TUR
AQUI00ITA
ARA200SVN
ARGI00FRO
ARIS00GBR
ARJ600SWE
ASIR00ITA
AUBG00DEU
AUT100GRC
AUTN00FRA
AXPV00FRA
BACA00ROU
BADH00DEU
BAIA00ROU
BAUT00DEU
BBYS00SVK
BCLN00ESP
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BELF00GBR
BELL00ESP
BIRG00ITA
BISK00CZE
BME100HUN
BOGE00POL
BOGI00POL
BOGO00POL
BOLG00ITA
BOR100POL
BORJ00DEU
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BORK00DEU
BORR00ESP
BPDL00POL
BRMF00FRA
BRMG00DEU
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BRON00FRA
BRST00FRA
BRTS00BLR
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BRUS00BEL
BRUX00BEL
BSCN00FRA
BSVZ00ITA
BUCU00ROU
BUDD00DNK
BUDP00DNK
BUTE00HUN
BYDG00POL
BZR200ITA
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BZRG00ITA
CACE00ESP
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CAEN00FRA
CAG100ITA
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CAGL00ITA
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CAGZ00ITA
CAKO00HRV
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CAME00ITA
CANT00ESP
CARG00ESP
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CASB00IRL
CASC00PRT
CASE00ESP
CEBR00ESP
CEU100ESP
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CEUT00ESP
CFRM00CZE
CHIO00GBR
CHIZ00FRA
CIMO00ITA
CLIB00CZE
CMEL00ITA
CNIV00UKR
COBA00ESP
COMO00ITA
COST00ROU
CPAR00CZE
CRAK00CZE
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CREI00FRA
CREU00ESP
CTAB00CZE
CUGA00ITA
DARE00GBR
DELF00NLD
DENT00BEL
DEVA00ROU
DGOR00MNE
DIEP00DEU
DILL00DEU
DLF100NLD
DNMU00UKR
DOUR00BEL
DRAG00ISR
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DRES00DEU
DUB200HRV
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DUBR00HRV
DUTH00GRC
DVCN00SVK
DYNG00GRC
EBRE00ESP
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EDIN00GBR
EGLT00FRA
EIJS00NLD
EKAR00ITA
ELBA00ITA
ENAO00PRT
ENIS00GBR
ENTZ00FRA
ENZA00ITA
ESCO00ESP
EUSK00DEU
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EVPA00UKR
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FATA00ITA
FFMJ00DEU
FINS00FIN
FLRS00PRT
FOYL00GBR
FRA200UKR
FRNE00ITA
FUNC00PRT
GAIA00PRT
GALH00ITA
GANP00SVK
GARI00ITA
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GDRS00UKR
GELL00DEU
GENO00ITA
GJML00SRB
GLSV00UKR
GOET00DEU
GOML00BLR
GOP600CZE
GOPE00CZE
GOR200DEU
GRAC00FRA
GRAS00FRA
GRAZ00AUT
GSR100SVN
GUIP00FRA
GVDG00GRC
GWWL00POL
HAS600SWE
HEL200DEU
HELG00DEU
HERS00GBR
HERT00GBR
HETT00FIN
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HFL200AUT
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HFLK00AUT
HOBU00DEU
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HOE200DEU
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HOER00DEU
HOFJ00DEU
HOFN00ISL
HUEL00ESP
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IAVH00MAR
IBIZ00ESP
IENG00ITA
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IGD100GRC
IGEO00MDA
IGM200ITA
IGMI00ITA
IGNF00FRA
IJMU00NLD
ILDX00FRA
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INVE00GBR
INVR00GBR
IRBE00LVA
ISRN00ITA
ISTA00TUR
IZAN00ESP
IZMI00TUR
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IZRS00UKR
JATE00ITA
JOE200FIN
JOEN00FIN
JON600SWE
JOZ200POL
JOZE00POL
KAD600SWE
KARL00DEU
KATO00POL
KDA200SVN
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KELY00GRL
KEV200FIN
KHAR00UKR
KILP00FIN
KIR000SWE
KIR800SWE
KIRU00SWE
KIV200FIN
KLAD00SRB
KLNK00BLR
KLOP00DEU
KLSQ00GRL
KNJA00SRB
KOS100NLD
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KOSG00NLD
KRA100POL
KRAW00POL
KRRS00UKR
KRS100TUR
KTVL00UKR
KUNZ00CZE
KURE00EST
KUU200FIN
LAGO00PRT
LAMA00POL
LAMP00ITA
LARM00GRC
LCRA00ITA
LDB200DEU
LEIJ00DEU
LEK600SWE
LEON00ESP
LERI00GBR
LESK00SRB
LICC00GBR
LIDA00BLR
LIGN00ITA
LIL200FRA
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LILL00FRA
LINZ00AUT
LLIV00ESP
LODZ00POL
LOV600SWE
LPAL00ESP
LROC00FRA
M0SE00ITA
MAD200ESP
MADR00ESP
MAH100IRL
MALA00ESP
MALL00ESP
MAN200FRA
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MANS00FRA
MAR600SWE
MAR700SWE
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MARJ00CZE
MARP00UKR
MARS00FRA
MAS100ESP
MAT100ITA
MATE00ITA
MATG00ITA
MDEU00ITA
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MDOR00FRA
MDVJ00RUS
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MDVO00RUS
MEDI00ITA
MELI00ESP
MERS00TUR
MET300FIN
METG00FIN
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METS00FIN
MIK300FIN
MIKL00UKR
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MILO00ITA
MKRS00UKR
MLHD00IRL
MLVL00FRA
MMET00ITA
MNKW00BLR
MNSK00BLR
MOGI00BLR
MOP200SVK
MOPI00SVK
MOPS00ITA
MORP00GBR
MSEL00ITA
MUK200UKR
NABG00NOR
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NEWL00GBR
NICO00CYP
NOA100GRC
NOR700SWE
NOT100ITA
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NOTO00ITA
NOVP00BLR
NPAZ00SRB
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NPLD00GBR
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NSSP00ARM
NYA100NOR
NYA200NOR
NYAL00NOR
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NYIR00HUN
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OBE200DEU
OBE400DEU
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OBER00DEU
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OBET00DEU
OLK200FIN
ONS100SWE
ONSA00SWE
ORID00MKD
ORIV00FIN
OROS00HUN
ORTE00ITA
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OSJE00HRV
OSK600SWE
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OSLO00NOR
OSLS00NOR
OST600SWE
OUL200FIN
OVE600SWE
PADO00ITA
PALB00ITA
PASA00ESP
PAT000GRC
PDEL00PRT
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PEN200HUN
PENC00HUN
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PFA200AUT
PFA300AUT
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PFAN00AUT
PINS00BLR
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PLND00SRB
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PLYM00GBR
PMTH00GBR
POLV00UKR
POPI00ITA
PORE00HRV
POTS00DEU
POUS00CZE
POZE00HRV
PPSH00NOR
PRAT00ITA
PRIJ00SRB
PRYL00UKR
PSTO00PRT
PSTV00BLR
PTBB00DEU
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PULA00HRV
PULK00RUS
PUYV00FRA
PYHA00FIN
PZA200SVN
QAQ100GRL
RABT00MAR
RAEG00PRT
RAH100UKR
RAMO00ISR
RANT00DEU
REDU00BEL
REDZ00POL
REYK00ISL
RIGA00LVA
RIO100ESP
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RIOJ00ESP
RIVO00ITA
ROM200FIN
ROVE00ITA
RVNE00UKR
SABA00SRB
SALA00ESP
SART00ITA
SAS200DEU
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SASS00DEU
SAVU00FIN
SBG200AUT
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SBGZ00AUT
SCIL00GBR
SCOA00FRA
SCOR00GRL
SFER00ESP
SHOE00GBR
SID000SRB
SJDV00FRA
SKE000SWE
SKE800SWE
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SMI200DNK
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SMID00DNK
SMLA00UKR
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SMNE00FRA
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SNEC00CZE
SNEO00GBR
SNIK00ITA
SOD300FIN
SODA00FIN
SOFI00BGR
SONS00ESP
SPRN00HUN
SPT000SWE
SPT700SWE
SRJV00BIH
STAS00NOR
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STAV00NOR
STNB00PRT
SUBO00SRB
SUL500DNK
SULD00DNK
SULP00UKR
SUN600SWE
SUR400EST
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SUUR00EST
SVE600SWE
SVLL00ITA
SVTL00RUS
SWAS00GBR
SWKI00POL
TAR000ESP
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TARI00ESP
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TARS00ITA
TEOS00ITA
TER200UKR
TERC00PRT
TERS00NLD
TERU00ESP
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THU100GRL
THU200GRL
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THU300GRL
TIT200DEU
TLL100IRL
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TLLG00IRL
TLMF00FRA
TLSE00FRA
TLSG00FRA
TOIL00EST
TOPP00ITA
TOR100ESP
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TOR200EST
TOR300EST
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TORA00EST
TORI00ITA
TORN00FIN
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TOUL00FRA
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TRAB00TUR
TRDS00NOR
TREU00ITA
TRF200AUT
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TRFB00AUT
TRMI00ITA
TRO100NOR
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TROM00NOR
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TRON00NOR
TUBI00TUR
TUBO00CZE
TUC200GRC
TUO200FIN
UBEN00ITA
UCAG00ITA
UME600SWE
UNPG00ITA
UNTR00ITA
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UPAD00ITA
USAL00ITA
USDL00POL
UZHL00UKR
VAA200FIN
VAAS00FIN
VACO00CZE
VAE600SWE
VAIN00LVA
VALA00ESP
VALE00ESP
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VARD00NOR
VARS00NOR
VEN100ITA
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VENE00ITA
VFCH00FRA
VIGI00ITA
VIGN00ITA
VIGO00ESP
VIL000SWE
VIL600SWE
VILL00ESP
VIR200FIN
VIRG00ITA
VIS000SWE
VIS600SWE
VITR00BLR
VLFR00ITA
VLIS00NLD
VLN100IRL
VLNS00LTU
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VNRS00UKR
VTRB00ITA
WARE00BEL
WARN00DEU
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WETT00DEU
WRLG00DEU
WROC00POL
WSRT00NLD
WTZA00DEU
WTZR00DEU
WTZS00DEU
WTZZ00DEU
WUTH00NOR
YEBE00ESP
ZADA00HRV
ZARA00ESP
ZECK00RUS
ZIM200CHE
ZIMM00CHE
ZOUF00ITA
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ZPRS00UKR
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ZWEN00RUS
ZYWI00POL
ZZON00HUN
The EUREF reference frame solutions is a multi-year position and velocity solution computed with the CATREF software (Altamimi et al., 2007) . The positions and velocities are aligned to the IGb14 reference solution under minimal constraints using 14 transformations parameters (translations, rotations, scale and their rates) on a selection of IGb14 reference stations.
Discontinuities
During the stacking, position and velocity discontinuities (discontinuity file ) are introduced to account for sudden position change or velocity change in the position time series. A new station position and velocity is estimated after each discontinuity and the velocities are usually constrained to be equal before and after a discontinuity.
Post seismic deformations
In addition, this solution incorporates the ITRF2014 post-seismic deformation models for 5 stations: ANKR00TUR, BUCU00ROU, ISTA00TUR, REYK00ISL, TUBI00TUR.
Collocated stations
Also, except in cases of significant disagreements, the velocities of collocated sites are constrained to be the same.
Input Files
The EPN multi-year solution, is computed using the EPN daily combined SINEX files:
from 001/1996 (GPS week 834) up to 363/2013 (GPS week 1772), the daily SINEX are resulting from the EPN-repro2,
after GPS week 1772, the routine daily EPN combined SINEX files are used.
In January 2017 (GPS week 1934), the IGS (International GNSS Service) released the IGS14 together with the isg_14.atx. The epn_14.atx calibration file, used within the EPN since GPS week 1934, consists of the individual antenna calibrations of the EPN stations plus the igs_14.atx.
The EPN positions estimated prior to 028/2017 (GPS week 1934) were computed using epn_08.atx (indiv. calib. + igs_08.atx). In order to ensure the consistency of the daily EPN solutions before GPS Week 1934 with the IGS14/epn_14.atx, their positions were corrected for the position changes caused by the switch from epn_08.atx to epn_14.atx. To maximize the consistency with IGS, when available, the position offsets computed by the IGS for IGS station/antenna pairs were used. If not available, the latitude-dependent models (IGSMAIL-7399) of the expected position offsets were applied.
The most recent EUREF reference frame solution is available from:
https://epncb.oma.be/ftp/product/referenceframe/latest/ .
See below for the naming of the products.
Previous reference frame solutions have been archived at: https://epncb.oma.be/ftp/product/referenceframe/ .
The EUREF reference frame product consists in:
Positions & Velocities of EPN stations with more than 3 years
The positions and velocities of the EPN stations with more than 3 years of observations and without modelled post-seismic deformations are provided in the SNX and SSC format and are expressed in 3 different reference frames IGb14, ETRF2000, ETRF2014.
They are also available through ETRS89/ITRS Positions & Velocities web pages (e.g. for ACOR00ESP station ).
Under test: For Bernese users, a CRD (EPN_IGb14_C2235_R.CRD) and a VEL (EPN_IGb14_C2235_R.VEL) file are available for all the stations observed within the last 270 days. For each station, the position and the velocity of the last available solution number is given.
Positions of other EPN stations
The positions of the stations with less than 3 years of observations and of the 5 stations with modeled post-seismic deformations (ANKR00TUR, BUCU00ROU, ISTA00TUR, REYK00ISL, TUBI00TUR) are only provided in the SSC format and expressed in 3 different reference frames: IGb14, ETRF2000, ETRF2014.
The station positions and velocities are also available through web pages (e.g. for BAUT00DEU station ).
Position Time Series of EPN Stations
Extended Position Time Series of EPN Stations
Each day, the EPN CB extends the multi-year EPN time series with recent EPN solutions to enable a quick monitoring of the EPN station positions. In practice, currently, the multi-year EPN solution from GPS week 834 till 2235 has been extended in time using the operational daily combined EPN solutions from GPS week 2236 till 2335 and the rapid daily combined solutions from GPS week 2336 till 2341.
Dynamic plots of the extended position (in IGb14 and ETRF2014) and residual position time series in IGb14 and ETRF2014 are available online .
EPN discontinuities
EPN_discontinuities.snx contains a catalogue of all discontinuities observed in the EPN multi-year solution. It defines the solution numbers (soln) used in the solution.
The list has been as much as possible harmonized to agree with the IGS/ITRF discontinuity table . Unfortunately, some stations still disagree due to different period of observations.
Outliers
EPN_outliers.lst contains the list of positions removed from EPN daily combined SINEXs before the multi-year combination.
Station classification and tool for selecting the reference stations
Station classification and tool for selecting the reference stations
Miscellanous plots
Please cite the EPN Multi-year Position and Velocity Solutions as: Legrand J. (2022): EPN multi-year position and velocity solution CWWWW, Available from Royal Observatory of Belgium, https://doi.org/10.24414/ROB-EUREF-CWWWW .
A DOI is also available for each solution since solution C2085.
Please cite the current multi-year solution as:
Legrand J. (2022): EPN multi-year position and velocity solution C2235, Available from Royal Observatory of Belgium, https://doi.org/10.24414/ROB-EUREF-C2235 .