EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
C. C. BruyninxBruyninxEPN EPN NetworkNetwork CoordinatorCoordinator
Royal Observatory of BelgiumRoyal Observatory of Belgium
PresentPresent StatusStatus of of thethe EUREF EUREF
Permanent NetworkPermanent Network
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
171 permanent stations (including 4 inactive), 14 new stations
STATUS OF EPN TRACKING NETWORK
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
Station 4 char ID Country Date inc.
Newlyn NEWL England 27-06-2004 TG ECGN
Athens IGD1 Greece 19-09-2004 H
Medicina MSEL Italy 10-10-2004 ECGN
Chania TUC2 Greece 24-10-2004 H
Budapest BUTE Hungary 31-10-2004 H IP
Taranto TARS Italy 19-12-2004
Cordoba COBA Spain 27-02-2005 H IP
Kharkiv KHAR Ukraine 20-03-2005 H
Bologna BOLG Italy 27-03-2005 ECGN
Thessaloniki AUT1 Greece 24-04-2005 H
Zlate Hory BISK Czech Republic 24-04-2005 H GLO
Jachymov MARJ Czech Republic 24-04-2005 H GLO
Pec SNEC Czech Republic 24-04-2005 H GLO
Vacov VACO Czech Republic 24-04-2005 H GLO
Withdrawn 04/2005
IGS more selective when including new stations
EPN TRACKING NETWORK – New stations
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
PROPOSED EPN STATIONS
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
EPN STATIONS CONTRIBUTING TO ECGN
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
EPN STATIONS CONTRIBUTING TO EUREF-IP
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
Station 4 char ID Country Status
Banska Bystrica BBYS Slovak Republic Commitment letter missing.
Diyarbakir DYR2 Turkey No data. Receiver to be replaced.
Evpatoria EVPA Ukraine Hourly data missing.
Maspalomas GMAS Spain Hourly data missing.
Trapani - Milo MILO Italy Lack of low-elevation tracking data on L2.
Obninsk MOBN Russian Federation Hourly data missing.
Paris OPMT France Commitment letter missing.
Poustka POUS Czech Republic Receiver to be repaired.
Reggio Calabria TGRC Italy Lack of low-elevation tracking data on L2.
Trafelberg TRFB Austria Late data availability.
Zwenigorod ZWE2 Russia Lack of low-elevation tracking data on L2.
PROPOSED EPN STATIONS
+ 8 new stations in France (10 km from BRST, 40 km from DENT), 76 km from KARL)
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
EPN STATIONS SUBMITTING HOURLY DATA
2000 - 38%
2001 - 45%
2002 - 51%
2003 - 58%
2004 - 61%
2005 - 74%
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
< 10min
10min – 1h
1h -3d
3d-missing
RELIABILITY OF HOURLY DATA FLOW
MAR6
MARJ
MARS
MAS1
MATE
MEDI
MLVL
MORP
NICO
NOT1
NSSP
NYIR
OBE2
OBET
ONSA
ORID
OROS
OSJE
PADO
PDEL
PENC
PFAN
POTS
PRAT
PTBB
QAQ1
RABT
REYK
SASS
SBGZ
SFER
SKE0
SMID
SNEC
SOFI
SPT0
SULD
SULP
TERS
THU3
TLSE
TORI
TRAB
TUBO
TUC2
VACO
VALE
VENE
VIL0
VILL
VIS0
WARE
WARN
WROC
WTZR
YEBE
ZIMM
ZOUF
ZYWI
0
20
40
60
80
100
% o
f h
ou
rly
fil
es
AQUI
AUT1
BISK
BOGI
BOGO
BOR1
BORK
BRST
BRUS
BUCU
BUDP
BUTE
BZRG
CACE
CAGL
CAGZ
CAME
CANT
CASC
COBA
COMO
DELF
DENT
DOUR
DRES
DUBR
EIJS
ELBA
EUSK
GAIA
GANP
GENO
GLSV
GOPE
GRAS
GRAZ
HELG
HERS
HERT
HOBU
HOER
HOFN
IENG
IGD1
ISTA
JOZ2
JOZE
KARL
KATO
KHAR
KIR0
KIRU
KLOP
KRAW
LAGO
LAMA
LAMP
MALL
MANS
0
20
40
60
80
100%
of
ho
url
y f
ile
s
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
RELIABILITY OF DAILY DATA FLOW
PFAN
POLV
POTS
PRAT
PTBB
*QAQ1
RABT
RAMO
REDU
REYK
RIGA
SASS
SBGZ
SFER
SJDV
SKE0
SMID
SNEC
*SODA
SOFI
SPT0
STAS
SULD
SULP
SVTL
TERS
THU3
TLSE
TORI
TRAB
TRDS
TRO1
TUBI
TUBO
TUC2
UNPG
UZHL
VAAS
VACO
*VALE
VARS
*VENE
VIL0
VILL
VIS0
VLNS
WARE
WARN
WROC
WSRT
WTZR
YEBE
ZECK
ZIMM
ZOUF
ZYWI
0
20
40
60
80
100
% o
f daily
file
s
HOER
HOFN
IENG
IGD1
INVE
ISTA
JOEN
*JOZ2
JOZE
KARL
KATO
KELY
KHAR
KIR0
KIRU
KLOP
KOSG
KRAW
LAGO
LAMA
LAMP
LLIV
LPAL
LROC
MALL
MANS
MAR6
MARJ
MARS
MAS1
MATE
MEDI
METS
MIKL
MLVL
MOPI
MORP
MSEL
NEWL
NICO
NOT1
NPLD
NSSP
NYA1
*NYIR
OBE2
OBET
ONSA
ORID
OROS
OSJE
OSLS
PADO
PDEL
PENC
0
20
40
60
80
100
% o
f da
ily fi
les
ACOR
AJAC
ALAC
ALME
ANKR
*AQUI
AUT1
BELL
BISK
BOGI
BOGO
BOLG
BOR1
BORK
BRST
BRUS
BUCU
BUDP
BUTE
BZRG
CACE
CAGL
CAGZ
*CAME
CANT
CASC
CEUT
CHIZ
COBA
COMO
CREU
DARE
DELF
DENT
DOUR
DRAG
*DRES
DUBR
EBRE
EIJS
ELBA
ESCO
EUSK
GAIA
GANP
GENO
GLSV
GOPE
GRAS
GRAZ
GSR1
HELG
HERS
HERT
HOBU
0
20
40
60
80
100
% o
f da
ily fi
les
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
EPN STATIONS USING 2 INDEPENDENT DATA FLOW PATHS TO BKG AND OLG
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
COMPARISON CONSTRAINED and MINIMALLY CONSTRAINED
EUREF SOLUTION
One on hand:Coordinates from weekly combined EUREF SINEX solution tied to the ITRFxx using constraints (up to GPS week 1303)
On the other hand: Coordinates from re-aligned weekly combined EUREF SINEX solution to ITRF2000 using mininum constraints (CatRef)
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
Constraints Minimum constraints
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
Constraints Minimum constraints
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
Constraints Minimum constraints
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
Constraints Minimum constraints
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
Difference between coordinates from minimally constrained and constrained EUREF solution
BRUS ONSA
EPN Central Bureau EUREF TWG Meeting, May 31, 2005, Vienna, Austria Royal Observatory of Belgium
• Weekly EUREF solution degraded since Dec. 1999 due to bug in Bernese (annual period)
• From 14 AC using Bernese, 3 corrected bug in summer 2004
• Annual period is almost gone when- Using minimum constraints to tie the solutions to the ITRF
because absorbed by Helmert transformation - Stacking the weekly normal equation to generate time series
- Consequence: coordinate difference can be expected between constrained EUREF solution and minimally constrained EUREF solution :
- between -1.5 cm and 1.5 cm in the height - few mm horizontallyfor unconstrained stations