NTRIP -based DGPS service in Hungary - euref.eu · EUREF 2005 Symposium, Vienna, Austria, June 1-3, 2005 NTRIP -based DGPS service in Hungary Tamás Horváth ... (RTCM 2.1 Message

EUREF 2005 Symposium, Vienna, Austria, June 1-3, 2005

NTRIPNTRIP--based DGPS service in Hungarybased DGPS service in Hungary

Tamás Horváth

FÖMI Satellite Geodetic ObservatoryPenc, Hungary


• Department of the Institute of Geodesy, Cartography and Remote Sensing (FÖMI)

• 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

• Network RTK software testing 2005

The Satellite Geodetic Observatory


Contents

• Network configuration

• Services

• Data dissemination

• User community

• Further development


Existing Reference Station Network

NYIR

CSOR

OROS

KAPO

KECSZALA

SZFV

50 km 100 km

BUTE

PENC

GYOR

MONO

JASZ

PECS


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


• RINEX data (hourly and daily files) for post-processing

• 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

• GPS equipment calibration

• Support during normal working hours

Services


RINEX Data Downloading


0.3

2.5

4.5

0.4

0.4

2.7

1.4

1.5

50 60 70 80 90 100

Percentage

PENC

OROS

NYIR

CSOR

KAPO

KECS

ZALA

SZFV

Re

fere

nc

e s

tati

on

s

RINEX data outage

RINEX Data Availability

Average availability of RINEX files since April: 98.3%


Ref. station 1

Ref. station 2

Ref. station 3

.

.

.

Ref. station n

User SegmentNtripCaster

www.gpsnet.hu:2101

82.131.181.15:2101

Takarnet/InternetHTTP Streams

GPRS/InternetHTTP Streams

RTCM Data Broadcasting

Average availability of NtripCaster in May 2005 : 99.7%


GPRS/RTK Test in Budapest

Combined GPS receiver & antenna

Controller with

integrated NtripClientand GIS functionality

communication


• 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.

Potential User Community


Service Users


Number of real-time service users

0

5

10

15

20

25

30

35

40

45

50

01 April 2004 01 July 2004 01 October 2004 01 January 2005 01 April 2005

date

No

. o

f u

se

rs

Growing Number of Users


Real-time service users

GIS

5%

Other

5%

Research institute

3%Tracking

3%

Forestry

3%

Archaeology

3%

Natural disaster

management

5%

Survey

25%

GNSS equipment

reseller

16%

University

11%

Hand held

8%

SW development

8%

Road construction

5%

User Sectors


DGPS vs. RTK users

RTK users

54%DGPS users

38%

Raw data users

8%

Demand for High Accuracy


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

KECSZALA

OZDISZER

FUZEPENC

JASZTATA BUTE

HAJD

MEZO

SZEG

KISV

BERE

PUSP

BEKE

KISK

PAKS

BAJA

AJKA

SIOF

SZFV

KANI

SZOM

Network Upgrade Phase B (2006 - )

GYOR

PECS

MONO


New Services to be introduced

• Real-time correction data:

• RTCM-EU (EUPOS® format using FKP)

• VRS corrections (RTCM 2.1 Message Types 20/21)

• RTCM 3.x (Master-Auxiliary concept)

• 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: [email protected]

Phone: +36 27 374 980

Documents

NTRIP -based DGPS service in Hungary - euref.eu · EUREF 2005 Symposium, Vienna, Austria, June 1-3, 2005 NTRIP -based DGPS service in Hungary Tamás Horváth ... (RTCM 2.1 Message