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Networked DGPS via Internet

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Title: Networked DGPS via Internet Subject: CGSIC 14-15.03.2005 Author: Dirk St cker Last modified by: Dell Created Date: 10/23/2003 7:17:27 AM Document presentation ... – PowerPoint PPT presentation

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Title: Networked DGPS via Internet


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, ...
  • gt 5 m absolute GPS
  • 5 m 1 m DGPS
  • 0.50 m networked DGPS
  • lt 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_at_euronav.de
Dipl.-Ing. Dirk Stöcker EuroNav
Service GmbH CGSIC/IISC 14-15.03.2005
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