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EUREF LOCAL ANALYSIS CENTRE
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Agency acronym : IGE
Institution : Instituto Geografico Nacional - Spain
Mail Address : Sercicio de Programas Geodesicos
: C/ General Ibanez Ibero, 3
: 28003 Madrid
Country : Spain
Primary Contact
Contact Name : Jose Antonio Sanchez Sobrino
Telephone : (34) 915979428
Fax : (34) 915979616
E-Mail : jassobrino@fomento.es
Secondary Contact
Contact Name : Marcelino Valdes Perez de Vargas
Telephone : (34) 915979433
Fax : (34) 915979616
E-Mail : mvaldes@fomento.es
Software Used : Bernese GPS Software Version 4.2 from week 1119 to 1363
: Bernese GPS Software Version 5.0 since week 1364 to 1755
: Bernese GPS Software Version 5.2 since week 1756
Stat. Included in Analysis :
9-ID start stop network
ACOR00ESP (EPN) 1119 - now
ADAR00GBR (EPN) 1936 - now
ALAC00ESP (EPN) 1119 - now
ALBA00ESP (EPN) 1444 - now
ALME00ESP (EPN) 1119 - now
ARIS00GBR (EPN) 1936 - now
AXPV00FRA (EPN) 1577 - now
BADH00DEU (EPN) 1374 - now
BCLN00ESP (EPN) 1856 - now
BELF00GBR (EPN) 1412 - now
BELL00ESP (EPN) 1756 - now
BORR00ESP (EPN) 1450 - now
BRMF00FRA (EPN) 1855 - now
BRON00FRA (EPN) 1740 - 1764 (excluded)
CACE00ESP (EPN) 1119 - now
CAEN00FRA (EPN) 1577 - now
CAG100ITA (EPN) 1882 - now
CAGZ00ITA (EPN) 1237 - 1759 (excluded)
CANT00ESP (EPN) 1119 - now
CARG00ESP (EPN) 1864 - now
CASB00IRL (EPN) 1811 - now
CASC00PRT (EPN) 1119 - now
CEUT00ESP (EPN) 1144 - 1415 (decomissioned)
CEU100ESP (EPN) 1470 - now
CHIO00GBR (EPN) 1936 - now
COBA00ESP (EPN) 1312 - now
CREU00ESP (EPN) 1119 - now
DARE00GBR (EPN) 1229 - now
EBRE00ESP (IGS) 1119 - now
EDIN00GBR (EPN) 1936 - now
ESCO00ESP (EPN) 1177 - now
FLRS00PRT (ENP) 1495 - now
FUNC00PRT (EPN) 1487 - now
GAIA00PRT (EPN) 1119 - now
GARI00ITA (EPN) 1557 - now
GRAC00FRA (EPN) 1870 - now
HERT00GBR (IGS) 1232 - now
HUEL00ESP (EPN) 1444 - now
IENG00ITA (IGS) 1256 - now
IGMI00ITA (EPN) 1412 - now
ILDX00FRA (EPN) 1740 - now
IZAN00ESP (EPN) 1515 - now
LAGO00PRT (EPN) 1119 - now
LEON00ESP (EPN) 1444 - now
LERI00GBR (EPN) 1936 - now
LLIV00ESP (EPN) 1756 - now
LPAL00ESP (IGS) 1119 - now
LROC00FRA (IGS) 1166 - now
MALA00ESP (EPN) 1349 - now
MALL00ESP (EPN) 1119 - now
MAN200FRA (EPN) 1577 - now
MAS100ESP (IGS) 1119 - now
MATG00ITA (EPN) 1857 - now
MDOR00FRA (EPN) 1577 - now
MELI00ESP (IGS) 1701 - now
MOPS00ITA (EPN) 1424 - now
NEWL00GBR (EPN) 1277 - now
PASA00ESP (EPN) 1870 - now
PDEL00PRT (IGS) 1166 - now
PMTH00GBR (EPN) 1936 - now
PRAT00ITA (EPN) 1226 - now
RABT00MAR (IGS) 1119 - now
RAEG00PRT (IGS) 1951 - now
RIOJ00ESP (EPN) 1349 - 1683 (decomissioned)
RIO100ESP (EPN) 1701 - now
ROVE00ITA (EPN) 1370 - now
SALA00ESP (EPN) 1401 - now
SCIL00GBR (EPN) 1936 - now
SCOA00FRA (EPN) 1577 - now
SCOR00GRL (IGS) 1645 - now
SFER00ESP (IGS) 1119 - now
SHOE00GBR (EPN) 1941 - now
SMNE00FRA (EPN) 1577 - now
SNEO00GBR (EPN) 1936 - now
SONS00ESP (EPN) 1444 - now
SWAS00GBR (EPN) 1936 - now
TARI00ESP (EPN) 1856 - now
TERC00PRT (EPN) 1565 - now
TERU00ESP (EPN) 1499 - now
TLLG00IRL (EPN) 1811 - now
TLMF00FRA (EPN) 1577 - now
UCAG00ITA (EPN) 1857 - now
USAL00ITA (EPN) 1588 - now
VALA00ESP (EPN) 1476 - now
VALE00ESP (EPN) 1119 - now
VIGO00ESP (EPN) 1349 - now
VILL00ESP (IGS) 1119 - now
YEBE00ESP (IGS) 1119 - now
ZARA00ESP (EPN) 1381 - now
ZOUF00ITA (EPN) 1253 - now
EUREF solutions generated : IGEwwww7.SNX Solution for 1 week for GPS week 'www' in SINEX format
for GPS week 'wwww' IGEwwww7.SUM Processing summary file for 1 week
IGEwwwwd.TRO Daily troposphere SINEX solution (d[0-6])
IGEwwwwd.SNX Daily SINEX solution (d[0-6])
IGEwwwwdr.SNX Daily rapid ephemerides solution in SINEX format
EUREF solutions sent to : igs.ifag.de (BKG)
Report generated : 08/08/01
Report updated : 24/03/06
24/01/07
26/04/13
18/09/13 - software used updated
28/05/14 - new stations added
25/02/15 - correction of mistake: GMF instead VMF in Troposphere section
21/12/16 - adding BCLN, BRMF, CAG1, CARG, CASB, GRAC, MATG, PASA, TARI, TLLG and UCAG ...
and from Wk 1924, orbits changed from IGS to CODE
23/01/18 - new troposphere estimation based on VMF instead GMF since Wk1980
some stations added: ADAR, ARIS, CHIO, EDIN, LERI,PMTH, RAEG, SCIL, SHOE, SNEO, SWAS
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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 : Carrier phase, code only used for receiver clock sync.
Elevation angle cutoff :
10 degrees + elevation dependent weighting
since week 1400: 3 degrees + elevation dependent
weighting with cos-z.
Data sampling (for ambiguity resolution) : 30 s
Data sampling (for final processing) : 180 s
Since GPS week 1756: GPS+GLONASS observations are used
Modelled : Double-differences, ionosphere-free linear combination
observable
Ground antenna : up to week 1400: Elevation-dependent phase center corrections are
phase center applied to model the differences between different
calibrations antenna types (e.g. Rogue and Trimble)
We use the IGS_01 model (no exceptions). Corrections
are given relative to the AOAD/M_T (TRM29659.00) antenna.
since week 1400: Absolute antenna phase center corrections
(exceptions for stations with indiv. absol. calibrations)
considering antenna radome codes. If antenna/radome pair
has no available calibrations, the corresponding
values for the radome code "NONE" are used
Satellite antenna: since week 1400: Absolute antenna phase centre corrections
phase center based on IGS05 model.
calibrations
since week 1632: Absolute antenna phase center corrections
based on IGS08 model (exceptions for stations with indiv.
absol. calibrations) considering antenna radome codes.
If antenna/radome pair has no available calibrations,
the corresponding values for the radome code "NONE" are used.
Troposphere : up to week 1364: No a priori model,
estimating zenith delays in 1 hour
intervals for each station,
mapping function: Dry Niell
since week 1364: Saastamonien-based dry component mapped
with the dry-Niell mapping
function is used as a priori model.
To map the wet component, the wet-Niell
mapping function is used.
since week 1400: Dry-Niell as a priori model,
estimation of zenith delay corrections
at 1-hour intervals for each station,
using the wet-Niell MF, no a priori sigmas.
Horizontal gradient parameter estimated/day/station
(TILTING), no a priori constraints.
Compute daily TRO files with fixed cummul.
coordinates input from weekly solution.
since week 1756: GMF as a priori model, mapped with
DRY GMF mapping function and ZPD
parameters estimated using WET GMF
mapping function and CHENHER gradient
estimation model.
Daily TRO files obtained from the final
weekly solution.
since week 1980: DRY_VMF as a priori model and ZPD parameters
estimated using VMF_WET model and CHENHER
gradient estimation.
Ionosphere : Regional ionospheric model calculated used for QIF
ambiguity estimation.
Not modelled in final solution (ionosphere eliminated
by forming the ionosphere-free linear combination
of L1 and L2).
Ocean loading : Using Ocean-Loading-Model computed by H.G.Scherneck
Onsala Space Observatory
Since GPS week 1400 : FES2004 model
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ESTIMATED PARAMETERS (APRIORI VALUES & SIGMAS)
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Adjustment : Weighted least-squares algorithms
Rejection Criter.: up to week 1364: No rejection during parameter estimation procedure.
Outliers are marked during pre-processing step.
since week 1364: Daily RINEX observation files containing
less than 10 percent of possible observation
are ignored.The threshold value concerning
data screening is 2.5 mm, specifically for
a normalized, or L1 zero-difference zenith
residual.Station where baseline data exceeding the
overall sigma level of 5 millimeters is excluded.
Datum definition : One station constrained YEBE (0.1 mm) to the ITRFyy
The ITRFyy velocities are used for daily coordinates updates.
from week 1400 to 1631: YEBE used for minimal constraints to IGS05
from week 1632 to 1708: YEBE used for minimal constraints to IGS08
from week 1709 to 1755: YEBE used for minimal constraints to IGb08
from week 1756 to 1933: minimal constraint to a set of 22 stations selected
from the constraints core stations used for the EUREF final solution
(3-translation Helmert): ACOR ALAC ALME CAGZ CANT CASC HERT IENG LAGO
LPAL LROC MALL MAS1 NEWL PDEL RABT SFER VALE VILL YEBE
IGb08 coordinates from EPNIGB08.CRD and .VEL
Outlier for station Datum rejection in Helmert: 5 mm in north & east
and 20 mm in up component.
from week 1934: minimal constraint to a set of ITRF14 stations from
the EPN cumulative solution. Outlier for station Datum rejection in
Helmert: 5 mm in north & east and 20 mm in up component.
Troposphere : Absolut constraints: 5.0 m, Relative constraints: 5.0 m
Compute daily TRO files with coordinates input from weekly solution.
Estimation trop. parameter in 1 hour interval.
Ionosphere : Regional ionospheric model for QIF ambiguity resolution.
Ambiguity : Ambiguity resolution is performed by using the quasi-
ionosphere-free (QIF) strategy with regional TEC information.
Elevation angle cutoff :10 degrees
From GPS week 1756: Advanced ambiguity resolution (AR) scheme:
- Code-Based Widelane (WL) AR for baselines shorter
than 6000km, a Melbourne-Wuebbena wide-lane
and narrow-lane AR is performed.
- Phase-Based Widelane (L5) AR for baselines shorter
than 200 km the code-based wide-lane AR is replaced
by a phase-only wide-lane before the narrow-lane AR.
- Quasi-Ionosphere-Free (QIF)AR applied on the
remaining real-valued ambiguities for baselines
shorter than 2000 km.
- Direct L1/L2 AR on baselines shorter than 20 km.
After this, each baseline is processed with introducing
the resolved ambiguities with their integer values and
checking the residuals.
- 10 degrees cut off for the AR.
Satellite clock : Satellite clock biases are not estimated but eliminated
bias by forming double-differences.
Receiver clock : Receiver clock corrections are estimated as part of the
biases preprocessing using code measurements. They are finally
eliminated by forming double differences.
Orbits and ERPs : IGS final orbit and ERP information.
-> DE200 planetary ephemeris
-> JGM3 Earth geopotential model.
From GPS week 1756: DE405 planetary ephemerides
Until GPS week 1923: IGS final orbit and ERP information
For rapid solution: CODE orbits (GPS and GLONASS)
From GPS week 1924: CODE orbits (GPS and GLONASS) and
ERP also for final solution
Tidal : Solid earth tidal displacements are modeled according to
displacements IERS conventions 1996. Ocean loading corrections are
computed based on Scherneck's amplitudes and phases. No
atmospheric loading corrections are taken into account.
From GPS week 1756: atmospheric loading corrections
introduced