Present Status of the EUREF Permanent Network

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


171 permanent stations (including 4 inactive), 14 new stations

STATUS OF EPN TRACKING NETWORK


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Withdrawn 04/2005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


PROPOSED EPN STATIONS


EPN STATIONS CONTRIBUTING TO ECGN


EPN STATIONS CONTRIBUTING TO EUREF-IP


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 STATIONS SUBMITTING HOURLY DATA

2000 - 38%

2001 - 45%

2002 - 51%

2003 - 58%

2004 - 61%

2005 - 74%


< 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


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 STATIONS USING 2 INDEPENDENT DATA FLOW PATHS TO BKG AND OLG


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)


Constraints Minimum constraints


Difference between coordinates from minimally constrained and constrained EUREF solution

BRUS ONSA


• 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

Present Status of the EUREF Permanent Network

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