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EPOSA®, a brand of Energie Burgenland, ÖBB-Infrastruktur AG and Wiener Netze GmbH
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EPOSA – Punktgenau – in Echtzeit
Cooperation partner:The Energie Burgenland is the power supply company in Burgenland. They were in the end of the 90th the first GNSS reference net provider in Austria.
The biggest transport company in Austria, the ÖBB-Infrastruktur AG owns telecom lines and railway stations throughout the whole country of Austria which forms the base of the EPOSA infrastructure.
The Wiener Netze GmbH is the biggest power supply company in Austria and has overtaken the leadership of EPOSA.
The Technical University of Vienna is performing the quality check and technical development of EPOSA.
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EPOSA – Punktgenau – in Echtzeit
Provided EPOSA Services (1)
• GNSS realtime positioning services- GNSS correction data (RTK, - Data format RTCM (Vers. 3.1, 2.3)- Independent to mobile communication providers
• GNSS postprocessing services- RINEX & virtual RINEX (Vers. 2.3) - Calculation of user positions from RINEX (RINEX-PPS)- Coordinate transformations
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EPOSA – Punktgenau – in Echtzeit
Provided EPOSA Services (2)
• Supported GNSS
- NAVigation System with Time And Ranging - Global Positioning System GPS
- GLObalnaya NAvigatsionnaya Sputnikovaya Systema GLONASS
- Europäisches Satellitennavigationssystem Galileo
- Chinesische Satelittennavigationssystem COMPASS/Beidou
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EPOSA – Punktgenau – in Echtzeit
Influences on GNSS SPP
Orbit error
Calculated Orbit
True Orbit
54° 32‘ 43‘‘12° 10‘ 11‘
Propagation error
Ionosphere50 -1000 km
Troposphere0 - 50 km
54° 32‘ 43‘‘12° 10‘ 11‘
Multipath
54° 32‘ 43‘‘12° 10‘ 11‘
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EPOSA – Punktgenau – in Echtzeit
Range of not networked reference stations
~10km
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EPOSA – Punktgenau – in Echtzeit
Range of networked reference stations
50 – 100 km
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EPOSA – Punktgenau – in Echtzeit
39 reference stationsseriel & IP-connections 2 server for data processing (Backup system ÖBB)
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EPOSA – Punktgenau – in Echtzeit
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EPOSA station overview
EPOSA coordinate frame – ITRF2008, Ep. 2010.0
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EPOSA – Punktgenau – in Echtzeit
NTRIP-Server
Internet
Data Center:Calculation
DGNSS-signal
Referenzstationen Antenne (GPS+GLONASS)
+ Empfänger
GPS/GLONASS-AntenneEmpfängerGPRS
Transmission time 1-1,5 seconds!
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NTRIP = Networked Transport of RTCM via Internet Protocol
EPOSA – Punktgenau – in Echtzeit
Data format via GPRS (NTRIP):
RTCM 2.3 Mountpoint: DGNSS
DGNSS correction data RTCM2.3
Mountpoint: DGNSS-TRDGNSS correction RTCM2.3+ Rasterinformation
Mountpoint: RTK-2.3RTK (GNSS) correction data RTCM2.3
Mountpoint: RTK-2.3-TRRTK (GNSS) correction data RTCM2.3
+ Rasterinformation
RTCM 3.1Mountpoint: RTK-3
RTK (GNSS) correction data RTCM3.1
Mountpoint: RTK-3-TRRTK (GNSS) correction data RTCM3.1+ Rasterinformation
Mountpoint: RTK-3-TR-Mxx (28, 31, 34)RTK (GNSS) correction data RTCM3.1+ Rasterinformation
No Transmission of correction data via GSM from 01.01.2015!
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EPOSA – Punktgenau – in Echtzeit
Transformation parameter
Zlokal
X lokalYlokal
ZITRF
XITRF YITRF Helmerttransformation
Coordinate Transformation from EPOSA reference frame (ITRF2008) to the Austrian official coordinate system MGI (Gauß-Krüger M34)
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Transformation Server (1):
EPOSA – Punktgenau – in Echtzeit
GK ebene Koord.(RW, HW, ortho. H)
Besselellipsoid ellip. Koord. (Lat, Lon, ortho. H)
ITRF kartesische Koord.(X, Y, Z)
Besselellipsoid ellip. Koord. (Lat, Lon, ellips. H)
Inverse Gauß-Krüger Projektion7-Parametertransformation (Einheitssatz)
Umrechnung auf ell. Koord. bezüglich Besselellipsoid
Due to the inhomogeneous MGI coordinates Residuals can be calculated atidentical pointsΔLat, ΔLon, ΔH
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Residuen-RasterEPOSA – Punktgenau – in Echtzeit
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Transformation-Server (2):
EPOSA – Punktgenau – in Echtzeit
Bikubische Spline - Interpolation
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• Raster information is attached to the usual RTK information within the format RTCM3.1 & RTCM2.3, or is transmitted to the user via the RTCM3.1 transformation messages.
• No local parameter sets needed for the transformation to MGI
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EPOSA – Punktgenau – in EchtzeitDarstellung des aktuellen Rasters (1)
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EPOSA – Punktgenau – in EchtzeitDarstellung des aktuellen Rasters (2)
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EPOSA – Punktgenau – in EchtzeitDarstellung des aktuellen Rasters (3)
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Only 1 parameter set for the whole region of Austria!
EPOSA – Punktgenau – in Echtzeit
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EPOSA – Punktgenau – in Echtzeit
www.eposa.atEPOSA
Postprocessing Sevices
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EPOSA – Punktgenau – in Echtzeit
GNSS RINEX data and virtual RINEX data (1)
www.eposa.at
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EPOSA – Punktgenau – in Echtzeit
GNSS RINEX data and virtual RINEX data (2)
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EPOSA – Punktgenau – in Echtzeit
GNSS observation data of all 39 reference stations 1 second period 95% availability L1 + L1/L2 data
Virtual GNSS observation data for whole Austria 1 second period 99% availability L1 + L1/L2 data
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GNSS RINEX data and virtual RINEX data (3)
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EPOSA – Punktgenau – in Echtzeit
RINEX PPS Service
The RINEX Post-Processing Service offers to the customer the possibility to upload collected data in RINEX format to the EPOSA server. Based on the collected and archived correction model data from the EPOSA network the uploaded data can be processed and the position can be calculated with an accuracy of 1-2 cm, dependent on the observation time.
Benefits:- No own processing software needed.- Only one GNSS receiver for collecting the observation data
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EPOSA – Punktgenau – in Echtzeit
RINEX PPS Service – Step by Step Web-Interface (1)
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EPOSA – Punktgenau – in Echtzeit
Job managementsettings
RINEX PPS Service – Step by Step Web-Interface (2)
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EPOSA – Punktgenau – in Echtzeit
Transformation-Service – Step by Step Web-Interface (1)
EPOSA Transformation service• Transformation ITRF2008 – ETRF89• Transformation ITRF2008 – MGI
www.eposa.at
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EPOSA – Punktgenau – in Echtzeit
Transformation-Service – Step by Step Web-Interface (2)
Job managementsettings
Further services:
● Training
● Support
● Test of new receiver/rover types
● Support of science and development
● Supported science projectsSMART Vidente, AUSPRO, GNSSMET-Austria, RA-PPP, RT-PPP, PPPServe, RegioMontan
EPOSA – Punktgenau – in Echtzeit
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Surveying Documentation (power lines, railroad, …) Stake out of buildings, construction sites, … Control measurements Tracking of special vehicles
• Helicopter, trains, … Controlling of construction machines
excavator bulldozer tractors
Collection of GIS data Determination of areas and volumina Archaeology
Applications:
EPOSA – Punktgenau – in Echtzeit
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EPOSA – Punktgenau – in Echtzeit
Example customers
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EPOSA – Punktgenau – in Echtzeit
Thank you for your attention!
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