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EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0 Denise Dettmering Federal Agency for Cartography and Geodesy (BKG) Frankfurt, Germany CGSIC 45 th Prague, Czech Republic, March 14-15, 2005

EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

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EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0. Denise Dettmering Federal Agency for Cartography and Geodesy (BKG) Frankfurt, Germany CGSIC 45 th Prague, Czech Republic, March 14-15, 2005. Content. EUREF-IP Pilot Project Ntrip 1.0 Ntrip data streams - PowerPoint PPT Presentation

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Page 1: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

EUREF-IP

Streaming GNSS data over the Internetusing NTRIP 1.0

Denise Dettmering

Federal Agency for Cartography and Geodesy (BKG)Frankfurt, Germany

CGSIC 45th Prague, Czech Republic, March 14-15, 2005

Page 2: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

Content

EUREF-IP Pilot Project

Ntrip 1.0

Ntrip data streams

EUREF-IP Ntrip Broadcaster

Ntrip DGPS Professional Service Concept

Page 3: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

EUREF-IP Pilot Project

• real-time GNSS infrastructure on the Internet

• selected EPN stations

• disseminate RTCM corrections for differential positioning and navigation purposes

• various other applications, like real-time orbit determination and atmospheric parameter estimation

• Pilot Project: EUREF-IP

Page 4: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

Networked Transport of RTCM via Internet Protocol

• RTCM recommended standard• for streaming GNSS data over the Internet• transmission via TCP/IP• based on HTTP communication

• HTTP port 80 for all communications (supported by most firewalls)• different data formats (RTCM/Raw measurement/...)• Internet Radio Technology

NTRIP 1.0

Developed by RTCM SC-104 Radio Technical Commission for Maritime Services Special Committee on Differential Global Navigation Satellite Systems

Page 5: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

NTRIP system components

Server

50...100 x max 5 kbit/s

1000... x max 5 kbit/s

Caster Client

• no direct communication between provider and user

• only one „real“ Internet Server (Caster)

• Caster works as data splitter: mass-usage possible

Page 6: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

Ntrip data streams

03/Mar/2005:

654 real-time data streams, from: 27 NtripCaster

30 countries

Page 7: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

Ntrip Broadcaster - Europe

Page 8: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

EUREF-IP Ntrip Broadcaster

www.euref-ip.net:80 134 data streams16 networksEPN: 14 stations

Page 9: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

EUREF-IP stations

Page 10: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

EUREF-IP station GOPE

Page 11: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

RoverReceiverRover

Receiver

NtripClientNtripClientNtripClient

Mobile IPMobile PIMobile IPMobile IPMobile PI

NtripTrackerNtripTracker

DSLDSL

NtripTracker

Mobile IPDSL

SystemOperatorSystem

OperatorSystem

Operator

BackupNtripMonitor

PrimaryNtripMonitor

PrimaryNtripCaster

NetworkDGPS VRS

ReferenceReceiver

ReferenceReceiver

NtripServerNtripServerNtripServer

DSLDSLDSL

BackupNtripCaster

EGNOSDGPS VRS

NtripServer

DSL

EGNOSReceiver

ReferenceReceiver

RoverReceiver

Internet

Ntrip DGPS Professional Service Concept

Administration

Raw DataRTCM Corrections

PrimaryNtripCaster

NetworkDGPS VRS

ReferenceReceiver

Raw DataRaw Data

PrimaryNtripCaster

NetworkDGPS VRS

RoverReceiver

RTCM Corrections

BackupNtripCaster

EGNOSDGPS VRS

EGNOSReceiver

Backup

Page 12: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

NtripClientNtripClient

Mobile IPMobile PI

NtripTrackerNtripTracker NtripServerNtripServer

DSLDSL DSLDSL Mobile IPMobile PI

ReferenceReceiver

ReferenceReceiver

RoverReceiverRover

Receiver

NtripClient

Mobile IP

NtripServerNtripServer

DSL

PrimaryNtripCaster

BackupNtripMonitor

NetworkDGPS VRS

PrimaryNtripMonitor

NtripTracker

Mobile IPDSL DSL

BackupNtripCaster

EGNOSDGPS VRS

EGNOSReceiver

ReferenceReceiver

RoverReceiver

SystemOperatorSystem

OperatorSystem

Operator

Administration

Raw DataRTCM Corrections

Internet

Ntrip DGPS Professional Service Concept

Page 13: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

Summary

Streaming GNSS data over Internet and cellular phone networks has proofed working

No significant degradation of performance compared to usage of other transportation media

Ntrip may disseminate all data streams with bitrates between 50 and 500 bytes/sec (different data formats)

RTCM committee has accepted Ntrip as standard for packet based communication

Multiple services already established, e.g. EUREF-IP

Various Ntrip clients and Ntrip servers are available

Page 14: EUREF-IP Streaming GNSS data over the Internet using NTRIP 1.0

http://igs.ifag.de/index_ntrip.htm

[email protected]

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