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EUREF LOCAL ANALYSIS CENTRE
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Agency acronym : WUT
Institution : Warsaw University of Technology
Mail Address : Department of Geodesy and Geodetic Astronomy
: Faculty of Geodesy and Cartography
: Warsaw University of Technology
: Pl. Politechniki 1
: 00-661 Warsaw
Country : Poland
Primary Contact
Contact Name : Tomasz Liwosz
Telephone : +48 22 234-77-54
Fax : +48 22 621-42-48, ext. 6
E-Mail : tomasz.liwosz@gik.pw.edu.pl
Secondary Contact
Contact Name : Michal Kruczyk
Telephone : +48 22 234-77-54
Fax : +48 22 621-42-48, ext. 6
E-Mail : kruczyk@gik.pw.edu.pl
Third Contact
Contact Name : Jerzy Rogowski
Telephone : +48 22 234-77-54
Fax : +48 22 621-42-48, ext. 6
E-Mail : j.rogowski@gik.pw.edu.pl
Software Used : Bernese GPS Software Version 4.0, developed at AIUB
: since GPSWEEK 1040 : Bernese 4.2, developed at AIUB
: since GPSWEEK 1318 : Bernese 5.0, developed at AIUB
: since GPSWEEK 1765 : Bernese 5.2, developed at AIUB
Stat. included in analysis : 4CHA start - stop
ALCI 1528 - now
ARGI 1625 - now
AMMN 1158 - 1164
BELF 1412 - now
BISK 1320 - now
BOGI 1185 - now
BOGO 860 - now
BOLG 1316 - now
BOR1 834 - now
BPDL 1483 - now
BUCU 998 - now
BYDG 1483 - now
CFRM 1576 - now
CLIB 1576 - now
CNIV 1399 - now
CPAR 1576 - now
CREI 1577 - now
CTAB 1576 - now
DARE 1229 - now
EGLT 1330 - now
ENIS 1523 - now
ESCO 1026 - now
EVPA 1349 - now
FOYL 1523 - now
GANP 1245 - now
GLSV 957 - now
GOPE 834 - now
GUIP 1330 - now
GWWL 1483 - now
HFLK 1349 - 1433
HOFN 925 - now
INVE 1225 - 1515
JOEN 878 - now
JOZ2 1236 - now
JOZE 834 - now
KATO 1231 - now
KELY 1133 - now
KHAR 1315 - now
KIRU 834 - now
KRA1 1576 - now
KRAW 1203 - now
KURE 1477 - now
LAGO 1101 - now
LAMA 834 - now
LLIV 1014 - now
LODZ 1483 - now
MDVJ 1417 - now
MDVO 834 - 1217
METS 834 - now
MIKL 1192 - now
MILO 1349 - 1571
MOP2 1494 - now
MOPI 880 - now
NSSP 987 - 1592
NYA1 956 - now
OBET 1225 - 1341
ONSA 834 - now
PDEL 1101 - now
PENC 843 - now
PLYM 1225 - 1244
POLV 1131 - now
PORE 1745 - now
POUS 1345 - now
POZE 1745 - now
PULK 1480 - now
REDZ 1483 - now
RIGA 878 - now
SASS 1235 - now
SCOR 1645 - now
SMLA 1556 - now
SNEC 1320 - 1535
SPRN 1437 - now
SPT0 1174 - now
SULD 1225 - now
SULP 1137 - now
SUUR 1395 - 1654
SUR4 1673 - now
SVTL 879 - now
SWKI 1483 - now
THU3 1201 - now
TOIL 1477 - now
TORA 1477 - 1647
TOR2 1673 - now
TRAB 1047 - 1456
TUC2 1294 - now
USDL 1483 - now
UZHL 1020 - now
VARS 1092 - now
VIGO 1349 - now
VLNS 998 - now
WETT 834 - 868
WROC 881 - now
WTZR 834 - now
ZYWI 1231 - now
EUREF solutions generated : WUTwwww7.SNX Solution for 1 week for GPS week 'www' in SINEX format
for GPS week 'wwww' WUTwwwwn.SNX Daily coordinate solution in SINEX format
weekdays "n" (0-6)
WUTwwwwn.TRO Daily troposphere results in
tropospheric SINEX format, for
weekdays "n" (0-6)
WUTwwww7.SUM Processing summary file for 1 week
WUTwwwwnR.SNX Daily rapid coordinate solution in SINEX format
weekdays "n" (0-6)
EUREF solutions sent to : BKG
Report generated : 10/01/1996
Report updated : 01/03/2000
: 04/05/2005
: 24/07/2009
: 06/11/2009
: 09/12/2010
: 26/04/2013
: 10/12/2013
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MEASUREMENT MODELS
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Preprocessing : Phase preprocessing in a baseline by baseline mode
using triple-differences. In most cases cycle slips
are fixed looking simultaneously at different linear
combinations of L1 and L2. If a cycle slip cannot be
fixed reliably, bad data points are removed or new
ambiguities are set up.
Basic observable : GPS carrier phase. Code measurements are only used for
receiver clock synchronization. The elevation cut-off angle
used for the official solution is 3 degrees. The data
sampling rate is 30 and 180 seconds.
Since week 1609: GPS+GLONASS observations are used.
Modelled : Double-differences, ionosphere-free linear combination
observable
Ground antenna : Up to GPS-week 1399: Elevation-dependent phase center corrections
are applied according to the model IGS_01.
Since GPS-week 1400: Absolute antenna phace center variations (APCV)
according to epn_05.atx are applied, including available individual APCV.
Since GPS week 1632: absolute phase center corrections applied according to
igs08.atx and epn08.atx models
Since GPS week 1765: GLONASS-specific PCVs used for GLONASS measurements
Satellite antenna: since GOS week 1400: Absolute antenna phase center corrections
phase center based on IGS05 model.
calibrations since GPS week 1632: corrections applied from igs08.atx model
Troposphere : Saastamoinen dry component mapped with dry Niell function is used as
a priori model. Wet part is mapped using wet NMF.
since GPS week 1765: dry GMF/GPT a priori model
Ionosphere : Not modeled (ionosphere eliminated by forming the
ionosphere-free linear combination of L1 and L2).
CODE global ionosphere models used to improve
ambiguity resolution (QIF and SIGMA).
Since GPS week 1765: 2nd order corrections applied
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ESTIMATED PARAMETERS (APRIORI VALUES & SIGMAS)
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Adjustment : least-squares algorithm, correlations correct.
Rejection Criter.: Observations with residuals larger than 0.0025 m are marked
in a preprocessing step and removed in the final
estimation.
Daily RINEX files with less than 50% possible observation
epochs are excluded.
Datum definition : A 3-translation condition with respect to IGS00, the IGS
realization of ITRF2000, is imposed. The list of stations
currently defining the datum includes the following IGS00
core stations: ONSA, BOR1, WTZR
Since week 1400:
A 3-translation condition with respect to realization of IGS05
is imposed. The list of stations defining the datum (minimum constrain)
currently includes the following IGS stations: ONSA, BOR1, WTZR.
Since week 1560:
BOR1, GLSV, HOFN, JOZE, METS, ONSA, WTZR are used for
a NNT minimal constraints conditions wrt. to IGS05.
Since week 1592:
BOR1, GLSV, HOFN, JOZE, ONSA, WTZR are used for
a NNT minimal constraints conditions wrt. to IGS05.
Since week 1632:
NNT minimum constraint conditions applied on coordinates
of usable IGS08 sites. The quality of reference sites is verified
using Helmert transformation test.
Since week 1709:
NNT minimum constraint conditions applied on coordinates
of usable IGb08 sites. The quality of reference sites is verified
using Helmert transformation test.
Troposphere : A priori : Dry part of Saastamoinen model mapped with dry Niell function
Estimated: Zenith corrections to the model in one-hour intervals
for each station (wet NMF used)
Horizontal gradients (tilting) are estimated every 24 hours
Since GPS week 1765:
A priori: dry GMF/GPT model
Estimated: Zenith corrections to the model in one-hour intervals
for each station (wet GMF used); no a priori sigmas.
Horizontal gradients are estimated every 24 hours for each station
(Chen and Herring model used); no a priori sigmas.
Troposphere parameters are computed with fixed coordinates from weekly solution.
Ionosphere : Global model from CODE is used for QIF and SIGMA ambiguity resolution.
Ionosphere not modelled in final solution (ionosphere eliminated
by forming the ionosphere-free linear combination of L1 and L2)
Ambiguity : Up to Wk 1599: QIF strategy (10 degrees cut off).
Since Wk 1600: QIF and SIGMA (L5/L3 and L1&L2) strategies
according to baseline length.
Since Wk 1609: No ambiguity resolution for GLONASS satellites
Since Wk 1765: Ambiguity resolution for GLONASS satellites
Satellite clock : Satellite clock corrections are not estimated but
biases eliminated by forming double differences.
Receiver clock : Receiver clock corrections are estimated as part of the
biases preprocessing using code measurements.
They are eliminated by forming double differences.
Orbits and ERPs : IGS final orbit and ERPs.
: since week 1609: CODE orbits and ERPs (GPS and GLONASS ephemerides)
Tidal : Solid earth tidal displacements are modeled according to
displacements IERS Conventions. Ocean loading corrections are
computed based on Scherneck's amplitudes and phases.
GPS-week 1321-99: GOT00.
GPS-week 1400- : FES2004.
Up to GPS week 1764: no atmospheric tidal loading applied.
Since GPS week 1765: atmospheric tidal loading corrections applied
(Ray and Ponte model)
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