# Presentation: 098147

## Networked

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

**Networked**
**DGPS**
**via Internet**

## Do we need networked DGPS?

**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**
**Conclusions**

##  S/A ~ 50-100m  5 – 15m

**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

## User requirements for broadcast services

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

-  ~ 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

##  DGPS users not interested in raw position

**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

## Do we need networked DGPS?

**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**
**Conclusions**

## EuroNet GNSS Software

**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)

## Hungary – Kaposvar 

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

- Hungary – Kaposvar

## Hungary – Kaposvar 

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

- Hungary – Kaposvar

## Hungarian test

**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)

## WWW based monitoring

**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**

## 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?

**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**
**Conclusions**

## 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?

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

-  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

## Reference station: NtripS 05

**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***

## EuroRef Software

**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

## Do we need networked DGPS?

**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**
**Conclusions**

## Networked DGPS via Internet:

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

-  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

## Thanks for your

**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/
-            dirk.stoecker@euronav.de