Title: Networked DGPS via Internet
1Networked DGPS via Internet
Dipl.-Ing. Dirk Stöcker EuroNav
Service GmbH CGSIC/IISC 14-15.03.2005
2Do 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
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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
6Do 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
8Hungary Kaposvar
Dipl.-Ing. Dirk Stöcker EuroNav
Service GmbH CGSIC/IISC 14-15.03.2005
9Hungary 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
12Dipl.-Ing. Dirk Stöcker EuroNav
Service GmbH CGSIC/IISC 14-15.03.2005
13Dipl.-Ing. Dirk Stöcker EuroNav
Service GmbH CGSIC/IISC 14-15.03.2005
14Dipl.-Ing. Dirk Stöcker EuroNav
Service GmbH CGSIC/IISC 14-15.03.2005
15Do 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
16Internet 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
20Do 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
22Thanks 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