Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
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Transcript of Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Networked
DGPS
via Internet
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Do we need networked DGPS?Do we need networked DGPS?
EuroNav DGPS network software
Internet and geodetic data
Conclusions
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
• S/A ~ 50-100m 5 – 15m
• WADPS 1 – 2 m
- EGNOS (summer 2005)
- ESTB/WAAS (working)
- SISNeT (higher availability)
• single base station DGPS 0.5 – 2m
- inhomogeneous or local only coverage
http://www.ga.gov.au/nmd/geodesy/argn/saplots/darw_hat.gif
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
User requirements for broadcast services
• ~ 5 m current car navigation, ...
• ~ 1 m lane accuracy in car navigation, ...
• ~ 0.5 m forestry, farming, aviation, ...
• ~ 0.01 m geodetic users, science, ...
> 5 m absolute GPS
5 m – 1 m DGPS
~ 0.50 m networked DGPS
< 0.50 m RTK
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
• DGPS users not interested in raw position
• integration in business processes solutions
• acceptance depends on pricing and savings
• market requires reasonable price and easy access few reference stations cheap communication (provider and user)
possibly densification with RTK when required
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Do we need networked DGPS?
EuroNav DGPS network softwareEuroNav DGPS network software
Internet and geodetic data
Conclusions
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
EuroNet GNSS Software
• full featured single station GNSS processing software
• module for generating network based DGPS
• internet support for data acquisition and data export (NTRIP)
• raw data management and distribution (together with EuroRef)
• source code available, cooperations possible
• soon: higher accuracy (networked RTK)
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Hungary – Kaposvar
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Hungary – Kaposvar
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Hungarian test
• 5 reference stations enough for whole country
• homogeneous coverage
• availability depends on redundance (no single point of failure)
„With the help of this sofware reference station networks can be densified with lower budget and single-station failures can be handled without significant performance degradation.“ Tamás Horváth (FÖMI-SGO)
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
WWW based monitoring
• display of software states (e.g. data availability)
• monitoring positioning
• display ionospheric influence (RTCA based)
• history for comparisons
• monitoring satellite visibility (station shadowing)
• remote access
• . . .
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Do we need networked DGPS?
EuroNav DGPS network software
Internet and geodetic dataInternet and geodetic data
Conclusions
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Internet based (NTRIP) raw data delays are ~ 1-2 seconds
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Why using the Internet for data transfer?
• available nearly everywhere
• standardized protocols (TCP/IP, RTCM-NTRIP)
• cheaper than most other solutions
• better availability using redundancy
• remote administration
• easy monitoring
Why not?
• Hacking, viruses security concept required
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Reference station: NtripS 05
• GNSS receiver drivers
• generating RINEX
• direct NTRIP upload
• WWW administration
• special hardware for long maintenance freedom
• security enhanced software
• automatic updates
• developed in cooperation with Internet Media Solutions
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
EuroRef Software
• flexible UNIX based reference station software
• supports lots of receiver types, data types and settings
• support for internet based real time data access
• minimum hardware requirements (100MHz systems work fine)
• export to standard formats (e.g. RINEX)
• sold seperately from NtripS 05 as well
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Do we need networked DGPS?
EuroNav DGPS network software
Internet and geodetic data
ConclusionsConclusions
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Networked DGPS via Internet:
• easy, cheap, reliable, homogeneous
• cooperations between data sources and service providers
• DGPS networking increases accuracy and reliability
• many advantages for controling and monitoring
• EuroNav provides
EuroRef reference station software
EuroNet DGPS network software
NtripS 05 reference station hardware
Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005
Thanks for your
attention and
feel free to ask.
http://www. .de/