# Presentation: 499932

## NTRIP-based DGPS service in Hungary

- Tamás Horváth
- FÖMI Satellite Geodetic Observatory
- Penc, Hungary

## The Satellite Geodetic Observatory

- 	Cartography and Remote Sensing (FÖMI)
- 	Established in 1969
-  	Located in Penc, Hungary
- 	(40 km NE of Budapest)
-  	Space geodetic research,
- 	technology and know-how transfer
-  	Active GPS network development
-  	International EUREF analysis
- 	centre (24 stations)
-  	GPS levelling and
- 	crustal movement monitoring
-  	*EUPOS**®* participant since 2002
-  	NtripCaster operator since 2004
-  	GNSS Service Centre established in 2004 
*	**EUPOS**®* National Competence Centre

## Contents

-  	Network configuration
- 	Data dissemination
-  	Services
-  	Accuracy
-  	User community
-  	Further development

## Existing Reference Station Network

**NYIR**

**CSOR**

**OROS**

**KAPO**

**KECS**

**ZALA**

**SZFV**

**50 km**

**100 km**

**BUTE**

**PENC**

## The TAKARNET Network

-  	Intranet network connecting 117 Hungarian Land Registry offices
-  	Designed for cadastre data exchange
-  	Central unit located at the FÖMI headquarters in Budapest
-  	The Satellite Geodetic Observatory is also an endpoint of TAKARNET
-  	Bandwidth: 256-448/128 kbps

## Reference Station and Network Control Centre

**GPS antenna**

**GPS receiver, PC running reference**
** ****station sw, UPS**

**Ntrip monitoring PCs, Rack with Internet routers**

**NtripCaster, Webserver, Data processing PCs**

## RTCM Data Broadcasting

**Ref. station 1**

**Ref. station 2**

**Ref. station 3**
**.**
**.**
**.**

**Ref. station n**

**User Segment**

**NtripCaster**

**www.gpsnet.hu:2101**
**82.131.181.15:2101**

**Takarnet/Internet**
**HTTP Streams**

**GPRS/Internet**
**HTTP Streams**

## Services

-  	RTK corrections
- 	(RTCM 2.1 Message Types 3, 20/21)	**1-5 cm accuracy**
- 	DGPS corrections
- 	(RTCM 2.1 Message Types 1, 2, 3) 		**submetre accuracy**
-  	EGNOS ESTB VRS corrections
- 	(RTCM 2.1 Message Types 1, 2, 3) 		**for testing only, intermittent**
-  	RINEX data (hourly and daily files) for post-processing
-  	GPS equipment calibration
-  	Support during normal working hours

## GPRS/RTK Test in Budapest

**Combined GPS **
**receiver & antenna**

**Controller with **
**integrated NtripClient**
**and GIS functionality **

**communication**

## RTK Accuracy (10 km baseline, GPRS)

**0.016 m (1****σ****)**

**0.010 m (1****σ****)**

**0.009 m (1****σ****)**

## User Community

-  	Cadastre management
-  	Area-based EU agricultural subsidy control
-  	Precision agriculture
-  	Land surveying
-  	GIS (e.g. public utility management)
-  	Traffic and transportation management
-  	Motorway/railway and bridge construction
-  	Machine guidance
-  	Environmental protection
-  	Natural disaster management
-  	Security services
-  	Hidrography
-  	Forestry
-  	Archaeology
-  	Universities & research institutes
-  	Etc.

## Service Users

## Further Development

- _2005_
-  	3 new stations to be deployed around Budapest
-  	Network RTK software to be installed at the NCC
-  	Homogeneous RTK coverage for greater Budapest
- 	Monitoring system to be developed
-  	Extended testing and demonstrations
- _2006 – 2007_
-  	Network densification  25 – 30 reference stations
- 	Infrastructure development financed by the state budget
- 	and by EU and bilateral projects
-  	Homogeneous RTK coverage for the whole country
-  	Real-time service charges to be introduced
-  	Supporting application development

## Network Upgrade Phase A (2005)

**50 km**

**100 km**

**NYIR**

**CSOR**

**OROS**

**KAPO**

**KECS**

**ZALA**

**OZDI**

**SZER**

**FUZE**

**PENC**

**MONO**

**JASZ**

**TATA**

**BUTE**

**HAJD**

**MEZO**

**SZEG**

**KISV**

**BERE**

**PUSP**

**BEKE**

**KISK**

**PAKS**

**BAJA**

**AJKA**

**SIOF**

**SZFV**

**PECS**

**KANI**

**SZOM**

- Network Upgrade Phase B (2006 - )

## New Services to be introduced

- 	Real-time correction data:
-  RTCM-EU (*EUPOS**®* format using FKP)
-  VRS corrections (RTCM 2.1 Message Types 20/21)
-  	Data for post-processing:
-  (>)1Hz RINEX files
-  	Rover receivers for rent
-  	Training courses for end users and state officials
-  	RINEX data processing service
-  	Extended support

## Acknowledgement

- The Hungarian DGPS network development is supported by the following projects:
-  	Ministry of Economy and Transport (GKM) GVOP-3.1.1.-04-	0001/3.0
-  	Hungarian Space Office (MŰI) TP-145

## Thank you for your attention!

- _Further Information:_
- Web: www.sgo.fomi.hu, www.gpsnet.hu
- E-mail: info@gpsnet.hu
- Phone: +36 27 374 980