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Enhancing GPS Accuracy with Networked DGPS Software

Explore the need for networked DGPS software in improving GPS accuracy, user requirements, and market demands. Learn about EuroNav's innovative GNSS software and Hungary's successful test results. Utilize Internet-based data transfer for real-time positioning with NtripS 05 reference station and EuroRef software. Discover the benefits of networked DGPS via Internet for enhanced reliability and precision in various industries.

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Enhancing GPS Accuracy with Networked DGPS Software

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  1. Networked DGPS via Internet Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. Hungary – Kaposvar Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005

  9. Hungary – Kaposvar Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005

  10. 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

  11. 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

  12. Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005

  13. Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005

  14. Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005

  15. 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

  16. Internet based (NTRIP) raw data delays are ~ 1-2 seconds Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005

  17. 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

  18. 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

  19. 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

  20. 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

  21. 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

  22. Thanks for your attention and feel free to ask. http://www. .de/ dirk.stoecker@euronav.de Dipl.-Ing. Dirk Stöcker EuroNav Service GmbH CGSIC/IISC 14-15.03.2005

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