description of the eposa-network of austria, we work with gps and glonass simultaneously, homogeneous accuracy throughout austria, http://www.eposa.at, made in 2012

1. EPOSA®, a brand of Energie Burgenland Netz, ÖBB IKT and Wien Energie Stromnetz GmbH

2. Seite 2
EPOSA – precise – in realtime
38 referencestations with Topcon CR3 and GB1000, GB500-
receivers
serial and IP-connections (double redundant system)
2 server as data-center (backup-system by ÖBB)

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EPOSA – precise – in realtime
Cooperation-partners:

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EPOSA – precise – in realtime
EPOSA-server
calculation
DGPS-signal
GSM-routerReceiver
GPS/GLONASS-
antenna
Position-calculation
on the rover
+
GSM-card
DGPS - signal
over GSM
DGPS - signal
over GSM
Runtime of data: 1-1,5 seconds !
Referencestations-antennas
(GPS+GLONASS)
+ receiver
System GSM

5. Seite 5
EPOSA – precise – in realtime
EPOSA-server
calculation
DGPS-signal
NTRIP-serverReceiver
GPS/GLONASS-
antenna
Position-calculation
on the rover
+
GSM-card
Runtime of data: 1-1,5 seconds !
Referencestations-antennas
(GPS+GLONASS)
+ receiver
Internet
System NTRIP

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EPOSA – precise – in realtime
Software products

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EPOSA – precise – in realtime
Communication-formats
type dial channel satellite mountpoint mountpoint mountpoint
gsm gps tr 679 L1+L2 GPS only RTK-3LEI RTK-3LEI-M34
gsm gps 672 L1+L2 GPS only PRS02 RTK-3LEI RTK-3LEI-M34
gsm gnss 673 L1+L2 GPS + GLO RTK-2.3
gsm gnss tr 674 L1+L2 GPS + GLO RTK-2.3-TR
gsm dgnss 668 L1 GPS + GLO DGPS
gsm dgnss tr 669 L1 GPS + GLO DGPS-TR
GSM and NTRIP
ITRF2000-Epoche1997

8. DGPS:
Format Accuracy
• RTCM 2.0 0,5 – 1 meter
PDGPS:
• RTCM 2.1 VRS 1 – 5 centimeter
• RTCM 2.3 VRS / FKP 1 – 5 centimeter
Post processing:
• RINEX 1 – 5 centimeter max 1 Hz
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EPOSA – precise – in realtime
Communication-formats and accuracy

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EPOSA – precise – in realtime
Transformation-server (1)
GK plane coordinates
Besselellipsoid ellipsoid. coord.
(width , length, ortho. height)
ITRF cartesian coordinates
Besselellipsoid ellipsoid. coord.
(width , length, ellips. heigght)
inverse Gauß-Krüger Projection 7-Parameter-Transformation
due to the inhomogeneity of the national coordinates and the difference of
ortho. and ell. heights there are tensions / residuals on identical points
∆width, ∆length, ∆height

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EPOSA – precise – in realtime
Transformation-server (2)
•Bicubic Spline - Interpolation
• Residualraster is in the format RTCM 2.3 placed at the data-center as
an additional correction .
• no local Parametersets,
a klick and the desired coordinate is in the national system
• CAUTION:
the resulting coordinates are no longer homogeneous ,
but contain the tensions of the national system .

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EPOSA – precise – in realtime
Salzburg ..283
Steiermark..479
Tirol ...80
Vorarlberg....53
Niederöster.126
Kärnten ...104
Burgenland...68
Wien ..86
Oberöster 155
Osttirol ...85
Σ . .1519
Residual-raster
time of measurement:
2 hours each point

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EPOSA – precise – in realtime
Transformation-parameter-sets
only one set of parameters for the whole area of Austria !

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EPOSA – precise – in realtime
Services
• Rover-equipment for rent
• Training and practice
• Support (on the telephone and on the spot)
• Device tests from various manufacturers
• Support to research and development
• Cooperation for research-projects

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EPOSA – precise – in realtime
Contact
• Customer Care:
Dipl.Ing. Christian Klug
phone +43 (0)1 4004-32920
fax: +43 (0)1 4004-32999
christian.klug@eposa.at
• Technical Support:
Hotline: +43 (0) 4004-32930
info@eposa.at
weekdays 07.30 – 18.00

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EPOSA – precise – in realtime
Thank you for your attention !