CORS User Forum

1
Post-Processing versus Real-Time GNSS
Challenging Perspectives for CORS Georg Weber,
BKG, Frankfurt CORS User Forum, 13 September
2006, Long Beach, CA
2
Status

• The number of post-processing GNSS users
  decreases rapidly.
• At the same time, the community of real-time
  users grows dramatically.
• With the exception of high precision reference
  system maintenance, very soon there will remain
  only a few positioning applications carried out
  in a post-processing mode.  

3
(No Transcript)
4
The Challenge

• Is NGS/CORS running out of business?
• So far mainly post-processing oriented, public
  providers are requested to extend services
  towards real-time.
• How shall NGS/CORS cope with the new situation?
  Should it add new products to its portfolio and
  what could they be?
• What may be the appropriate technology to follow?
• What could be an appropriate policy to align to? 

5
Networked Transport of RTCM via Internet Protocol
(Ntrip) - GPRS/UMTS Mobile
Internet - Based on HTTP
Caster
Reference
Rover
6
(No Transcript)
7
September 2004 Ntrip becomes RTCM Standard
Selection of devices supporting Ntrip
8
European Status of NtripReal-Time GNSS Reference
Networks Who participates in
9
Ntrip StreamsEurope
10
Ntrip BroadcastersEurope
11
US Ntrip Broadcasting Examples
12

• Real-Time GNSS Reference Networks
• Why?
• And what for?

13

• Hourly / Daily RINEX Upload
• Why deliver a daily newspaper monthly?

14
Post-Processing Versus Real-Time
Example forcontinuously aligning Reference
System ofNetworked RTK Service to ITRF / ETRS89
15
Real-Time Broadcast - Product Areas

• Satellite Orbits, Clocks
• Ephemerides
• Troposphere
• Ionosphere
• Space-Weather
• Satellite Health
• Interference
• Natural Hazards
• DGPS/RTK

16
Ntrip GNSS Broadcast Service Concept
Administration
Raw Data
Derived Products
Reference Receiver
Rover Receiver
Reference Receiver
Rover Receiver
Reference Receiver
Rover Receiver
WAAS Receiver
NtripClient
NtripServer
NtripTracker
NtripTracker
NtripClient
NtripServer
NtripClient
NtripServer
NtripTracker
NtripServer
System Operator
System Operator
System Operator
DSL
Mobile IP
DSL
Mobile IP
DSL
DSL
Mobile PI
Mobile PI
Mobile IP
DSL
Mobile IP
DSL
DSL
Internet
Primary NtripCaster
Backup NtripMonitor
Backup NtripCaster
Primary NtripMonitor
Primary Conversion I
Primary Conversion II
17
Under discussion withinEuropean National Mapping
Agencies

• Common adaptation or even development of GNSS
  software package (real-time GPS engine) within
  the framework of EUREF.
• Long-term usage and maintenance to follow model
  adopted for handling of Bernese post-processing
  software (access to source code).

18

• Real-Time GNSS
• Policy Recommendations
• Upgrade all CORS stations to real-time
• Pick up any stream continuously made available
• Support formats accepted by client software
• Disseminate high-rate data
• Setup network of Ntrip Broadcasters
• Monitor stream flow and content
• Assist existing real-time services
• Participate in global stream exchange
• Start with pilot project Call for
  participation

19
TU Delft TU Dresden TU Graz TU Vienna, Austria TU
of Civil Engineering Bucharest Tele-Info AG,
Garbsen Telematica e.K. Telespazio spa, Metera,
Italy Thales Navigation, France Thueringer
Landesvermessungsamt Top Geocart, Bucharest,
Romania Topcon Positiong Sys. USA Tower
Technologies, Turin Trimble GmbH,
Raunheim Trimble Italy Trimble Jena GmbH Trimble
Navigation, Hook, England Trimble Navigation,
Sunnyvale, USA Trimble Terrasat Trimble,
Spain UNAVCO PBO, Boulder UNSW, Sydney,
Australia UTI Systems, Bucharest, Romania Uni
Madrid, Spain Uni Milan, Agricultural
Institute Universidad Politecnica de Valencia,
Spain Universidad de Alcala, Guadalajara,
Spain Universidad de Zaragoza, Spain Universita
degli Studi di Padova Universita degli studi di
Napoli, Italy Universitaet des Saarlandes Universi
tat de Leida, Spain University of Bologna,
Italy University of Brescia, Italy University of
Colorado, Boulder, USA University of Cordoba
Spain University of Ferrara, Italy University of
Ljublijana, Slovenia University of Melbourne,
Australia University of New South Wales, Sydney,
Australia University of Padova, Italy University
of Rome University of Udine, Italy University of
Valencia University of Warmia and Mazury,
Olsztyn, Poland University of Wroclaw, Poland VI
INSTRUMENTS, West Germiston, South
Africa VPConsult GmbH, Buchholz, Germany WAT,
Warsaw, Poland Zimmermann-Optik GmbH,
Rostock aee-GmbH, Droessling, Germany rMAP,
Hungary samlltouch ApS, Aabyhoj,
Denmark t-mobile, Netherlands td group spa,
Italy Tecnotron Elektronik GmbH
Fraunhofer Institute for Applied Information
Techn. Fusion Numerics Inc, Boulder, USA GEFOS
Inc., Leica, Praha, Czech Republic GEOTOP,
Romania GTS Internet Partners, Jozefoslaw,
Poland Galileo Systems, Milano Geo GeoIT GmbH,
Berlin GeoNav GmbH GeoSurvey GmbH,
Waltersdorf Geocenter, Valencia, Spain Geodetic
Observatory Pecny Geofizyka-Torun, Torun,
Poland Geomatics, Ankara, Turkey Geostudio
s.r.l., Milano, Italy Geotronics, Praha, Czech
Republic Greater Vancouver Regional District HTW
Dresden, Fachbereich E-Technik Harpha sea d.o.o.,
Koper, Slovenija ICC Barcelona ICD, Uni
Dortmund IGN, France INMH, Bucharest, Romania INS
Sp. z.o.o., Poland INS, Krakow, Poland IREALP,
Milano, Italia ISEP, Porto, Portugal IfEN GmbH,
München Inst of Geod. Astron., Univ Warsaw,
Poland Inst. Sup. De Engenharia do Porto Inst. of
Cybernetics, Tallinn Tech. Univ., Estonia Instr.
Geod. Tadeusz Nadowski Sp.j., Tychy,
Poland Instytute Geodesy and Cartogr., Warsaw,
Poland Integrated Navigation Sysems Ltd,
England Intergis, Romania JPL, Caltech Pasadena,
USA John Deere Werke, Zweibrücken KEMNTSZ
Hungary Keytools, Fourways, South Africa LFTV AB,
Sweden LKVK Saarland LNR Globalcom,
Netherlands LVA Baden-Wuertemberg LVA
Mecklenburg-Vorpommern LVA NRW LVA Sachsen LVA
Schleswig-Hostein LVermG LSA LVermGeo
Rheinland-Pfalz, Germany Labtnaeteruet, Gaevle,
Sweden Landesbetr. Verm. u. Geobasisinf.
Brandenburg Leica Geosystems, France Leica
Geosystems, Berlin Leica Geosystems, Heerbrugg,
Schweiz Leica Geosystems, India Leica Geosystems,
München
Leica Geosystems, SA de CV, Mexico Leica
Geosystems, UK Logosystem S.p.A., Italy Loskot,
Warsaw, Poland MC Sistemi s.r.l., Vanzago,
Italy Magneti Marelli Magnetic Lunch Software
Ltd., Canada Magán, Bácsalmás, Hungary Marek
Moskwinski sp.j., Warszawa, Poland Materna
Information Communications, Dortmund Military
University of Technology, Warszawa,
Poland Ministry of the Environment, Copenhagen,
Denmark NCAD, USA NERC Space Geodesy
Facility National Geodetic Survey, Silver
Spring Natural Resources Canada Naval Academy
Varna, Bulgaria NetonWave2002 srl, Bucharest,
Romania Nybrovej, Lyngby, Denmark OPGK Gdansk,
Poland OmniSTAR b.v. Overgas, Sofia, Bulgaria PF
Geokart-MGGP, Poland PGK Vertical, Zory,
Poland PW, Warsaw, Poland Personaltech,
Hungary Private, Warszawa Prospectiuni,
Bucharest, Romania Proveo GmbH, Crailsheim RISC
Software GmbH, Hagenberg, Austria Real
Observatorio Armada, Spain Res. Inst.
Geod/Topogr/Cartogr, Czech Republic Ruhrgas
AG S.C. Optoelectronica SCA Graphic Paper AB,
Sundsvall, Sweden SCIGN, Pasadena, USA SMT, Saint
Marcel, France SNTech Kft., Duka, Hungary SP MTs,
Schweden SP2BZW, Bydgoszcz, Poland Senatsverwaltun
g Stadt Berlin Servicio de Geodesia, Inst.
Geographico Nacional Servizio Glociologico
Lombardo, Italy Siemens Transp. Systems,
Montrouge, France Sirf Technology, San Jose CA
Sistema Siam, Spain Software Radio Technology,
Midsomer Norton, UK Sokkia BV, Almere,
Netherlands Sokkia Kft Stadt Karlsruhe, Umwelt
und Arbeitsschutz Strata Software and Consultanc
Ltd., Bradford, UK Studio Negroni, Italy Studio
Tecnico, Italy Surveys and Mapping, South
Africa TELESPAZIO SPA, ROMA, ITALIY TSS Sp.J.,
Poland
Ntrip Test Validation
HYBM, Eskisehir, Turkey 2U FM, NSW,
Australia 4cell Systems, Kalisz,
Poland A.R.P.A.V, Rovigo, Italy AGH University of
Science and Technology ALLSAT AMBRA srl,
Romania Agenzia Spaziale Italiana, Matera Assogeo
Srl, Concorezzo, Italy Astrata South Africa
(Pty)Ltd Astrata South Africa, Rivonia, South
Africa Astronomical Institute, Univ. of Berne,
Switzerland Ayuntamiento de Carbon., Carbo.
Almeria, Espana BKF KVK MAI, Budapest,
Hungary BME, Hungary Blinken AS, Gressvik,
Norway Budapest University of Technology and
Economics Budapesti Muszaki és Gazdaságtudományi
Egyetem CONAN s.r.o CRIAI, Italy CRPV, Cesena,
Italy CSIC Madrid Cantabria University
Spain Centro Grafica s.r.l, Messina,
Italy Codevintec, Milano, Italy College of
Geoinformatics Szekesfehervar Hungary Compass-Spor
t Bt., Budapest, Hungary County of Orange,
California, USA D.G.Service srl, Rieti,
Italia DAI Telecom, Italy DB Netz AG, Minden DGGI
University of Cagliari DLR Neustreliz DLR
Oberpfaffenhofen Dardalus Group Engineering Ltd.,
Sofia, Bulgaria Deut. Forschungsz. f. Kuenstl.
Intelligenz (DFKI) Dip. Scienze Terra Univ.
Ferrara, Italy EDISON, Milano, Italy ESA-ESTEC Eas
tern-Hungarian Disaster Management Society Ecole
Centrale Paris, France Ericsson Nikola Tesla
d.d., Zagreb, Croatia FGAN-FHR, HSZ FH
Bochum FIL-COLEX Ltd. FOMI Satellite Geodetic
Observatory Fachhochschule Bochum Faculty of
Sciences of Lisbon, Lisboa, Portugal Falcom
GmbH Finish Geodetic Institute Forest Research
Institute, Cracow, Poland