GPS

Which GPS stations?

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Below is a list of the GNSS data providers ordered by country. For each provider, it gives the acronym of the associated GNSS stations. Note that the work is under progress to have a complete list. However, do not hesitate to contact us to keep it updated.
E-mail: sonel@sonel.org

COUNTRY (54)     PROVIDER (156) ACRONYM GNSS stations (675)    
Nanyang Technological University NTU  (1)
ARG Instituto Geografica Nacional de la Republica Argentina IGNRA  (11)
ARG Instituto Nacional de Prevención Sísmica INPRES  (1)
ARG Estacion Astronomica Rio Grande EARG  (3)
AUS Geoscience Australia GA  (43)
AUS Department of Environment & Primary Industries DEPI  (3)
AUS LANDGATE LANDGATE  (5)
AUS Department Infrastructure, Planning & Logistics DIPL  (2)
AUS IPS Radio and Space Services - Australia Bureau of Meteorology IPS  (1)
AUS Australian Surveying & Land Information Group AUSLIG  (1)
BEL Royal Observatory of Belgium ROB  (1)
BRA Instituto Brasileiro de Geografia e Estatística IBGE  (29)
BRA Instituto Nacional de Pesquisas Espaciais INPE  (1)
BRB Coastal Zone Management Unit CZMU  (2)
CAN National Resources Canada NRCan  (23)
CAN Geological Survey of Canada GSC  (3)
CHE Swiss Federal Office of Topography SWISSTOPO  (1)
CHL Departamento de Geofísica, Centro Sismologico Nacional, Univ. de Chile DGF - CSN  (1)
CHL Center for Space Studies CEC  (2)
COL Instituto Geografico Agustin Codazzi IGAC  (3)
CYM Cayman Land Info CAYMAN  (1)
DEU Deutsches GeoForschungsZentrum GFZ  (20)
DEU Bundesanstalt für Gewässerkunde BAFG  (15)
DEU Deutsches Geodätisches Forschungsinstitut DGFI  (1)
DEU Bundesamt für Kartographie und Geodäsie BKG  (20)
DNK DTU Space National Space Institute DTU-Space  (10)
DOM Universidad Nacional Pedro Henriquez Ureña UNPHU  (3)
ECU Instituto Geografico Militar Ecuador IGM_EC  (2)
EGY Centre d'Etudes Alexandrines CEAlex  (2)
ESP Instituto Geografico Nacional IGNE  (21)
ESP Puertos del Estado PDE  (2)
ESP Instituto Espanol de Oceanografia IEO  (1)
ESP Canary GNSS Centre CGC  (8)
ESP Instituto de Estadística y Cartografía de Andalucía IECA  (6)
ESP Junta de Castilla y Leon ITACYL  (1)
ESP Gipuzkoako Foru Aldundia GFA  (1)
ESP Geodetic Department Universtidad de Cantabria UC  (1)
FIN Finnish Geodetic Institute FGI  (2)
FRA Institut Géographique National IGN  (22)
FRA Service Hydrographique et Océanographique de la Marine SHOM  (2)
FRA Laboratoire d'Etudes en Geophysique et Oceanographie Spatiale LEGOS  (5)
FRA Direction des Infrastructures, de la Topographie et des Transports Terrestres DITTT  (4)
FRA Institut polaire français Paul Emile Victor IPEV  (1)
FRA Port Autonome de Nantes - Saint-Nazaire PANSN  (1)
FRA Laboratoire de Géologie de l’Ecole normale supérieure GEOL ENS  (3)
FRA Institut de Physique du Globe de Paris IPGP  (3)
FRA Centre National d"Etudes Spatiales CNES  (9)
FRA Centre d'Etudes Techniques Maritimes et Fluviales CETMEF  (7)
FRA ORPHEON ORPHEON  (3)
FRA SONEL-LIENSs SONEL  (14)
FRA Centre National de la Recherche Scientifique CNRS  (14)
FRA ACTIPLAN SARL ACTIPLAN  (3)
FRA Collectivité de Saint-Martin COM SAINT MARTIN  (1)
FRA SATINFO Réseau GNSS SAT-INFO  (4)
FRA EXAGONE - réseau TERIA EXAGONE  (13)
FRA GIE Coop&Tech - Réseau RTK - Groupement de Cooperatives Agricoles GIE Coop&Tech  (3)
FRA Ville de Nice Ville de Nice  (1)
FRA Grand Port Maritime du Havre HAROPA  (1)
FRA Communauté Urbaine de Dunkerque CUD  (1)
FRA Ville de Cannes - Direction des systèmes d'information Géographique Ville de Cannes  (3)
GBR NERC British Isles continuous GNSS Facility BIGF  (13)
GBR Bermuda Institute of Ocean Science BIOS  (1)
GHA Ghana Meteorological Agency GMA  (1)
GRC DEPARTMENT of GEODESY & SURVEYING DGS  (1)
GUY Service des Phares et Balises de Guyane DM-GUYANE  (1)
HRV Hydrographic Institute of the Republic of Croatia HHI  (1)
HRV State Geodetic Administration SGA  (4)
IDN National Coordination Agency for Surveys and Mapping BAKOSURTANAL  (1)
IRL Ordnance Survey Ireland OSI  (1)
IRN National Cartographic Center of I.R.IRAN NCC  (1)
ISR Survey of Israel (SOI) SOI  (2)
ITA Istituto Nazionale di Geofisica e Volcanologia INGV  (5)
ITA Istituto Superiore per la Protezione e la Ricerca Ambientale ISPRA/ID
ITA Università degli Studi di Ferrara UNIFE  (1)
ITA Agenzia Spaziale Italiana ASI  (6)
ITA Consiglio Nazionale delle Ricerche - Istituto di Scienze Marine CNR- ISMAR  (3)
ITA Regione Campania RC  (1)
ITA Regione Abruzzo RAbruzzo  (1)
ITA Cooperativa San Martino COOPSM  (1)
ITA e-geos S.p.A. - una societa ASI/Telespazio TPZ  (1)
ITA INAF ASTRONOMICAL OBSERVATORY OF CAGLIARI CAO  (1)
ITA Universita' di Cagliari - Dip. Ingegneria Strutturale - Sez. Topografia DISIG-Cagliari  (1)
JPN Geospatial Information Authority of Japan GSI  (42)
JPN Electronic Navigation Research Institute ENRI  (1)
JPN Space-Time Standards Laboratory ; National Institute of Information and Communications Technology NICT  (1)
KOR National Geographic Information Institute NGII  (1)
KOR Korea Astronomy and Space Science Institute KASI  (3)
KOR Korea Hydrographic and Oceanographic Administration KHOA  (7)
LKA Surveyor General's Office Colombo SGOC  (1)
MDV Gan Meteorological Office GANMET  (1)
MEX Servicio Mareográfico de la Universidad Nacional Autonoma de Mexico SMN-UNAM  (2)
MEX Instituto Nacional de Estadística y Geografía INEGI  (9)
MEX Departamento de Sismologia - Instituto de Geofisica - UNAM SSN-UNAM  (1)
MYS Department of Survey and Mapping Malaysia JUPEM  (6)
NAM Directorate of Survey and Mapping Namibia DSM-NAM  (1)
NLD Delft University of Technology TUDELFT  (7)
NOR Norwegian Mapping Authority - Kartverket NMA  (6)
NZL GeoNet Science GNS  (10)
NZL Land Information New Zealand LINZ  (1)
OMN Petroleum Development Oman PDO  (1)
PER Instituto geografico del peru IGN PERU  (2)
PHL National Mapping and Resource Information Authority NAMRIA  (1)
POL ASG-EUPOS ASG-EUPOS  (2)
POL Space Research Centre of the Polish Academy of Sciences SRC-PAS  (1)
PRT Space & Earth Geodetic Analysis Laboratory SEGAL  (3)
PRT Direccao de Servicos de Cartografia e Informacao Geografica DSCIG  (1)
PYF Université de la Polynesie francaise UPF  (6)
RUS SmartNet Russia SMARTNET  (1)
RUS Research Station of RAS RS-RAS  (10)
RUS Trofimuk Institute of Petroleum Geology and Geophysics IPGG SB-RAS  (1)
RUS Geophysical Observatory Arti ARS  (1)
RUS Institute of Astronomy, Russian Academy of Sciences INASAN  (1)
SLV Centro Nacional de Registros CNR  (1)
SVN Geodetic Institute of Slovenia GIS  (1)
SWE Swedish Meteorological and Hydrological Institute SMHI  (1)
TWN National Measurement Laboratory ; Industrial Technology Research Institute NML - ITRI  (2)
TWN National Standard Time and Frequency Telecommunication Laboratories, Chunghwa TL  (1)
TZA Tanzania Ports Authority TPA  (1)
UKR Crimean Astrophysical Observatory CRAO  (1)
URY Servicio geographico militar SGM  (2)
USA National Geodetic Survey NGS  (12)
USA University of Hawai'i Sea Level Centre UHSLC  (3)
USA UNAVCO UNAVCO  (5)
USA US Geological Survey USGS  (7)
USA University of California - Berkeley Seismological Laboratory UC-BSL  (5)
USA U.S. Naval Observatory USNO  (5)
USA U.S. Coast guard USCG  (29)
USA Jet Propulsion Laboratory JPL  (54)
USA National Radio Astronomy Observatory NRAO  (5)
USA University of the Virgin Islands UVI  (2)
USA Louisiana State University - Center for GeoInformatics LSU-C4G  (3)
USA North Carolina Geodetic Survey NCGS  (4)
USA BP BP - BPEXAK  (1)
USA Plate Boundary Observatory - EarthScope PBO  (4)
USA Connecticut Department of Transportation CT-CONDOT  (1)
USA SmartNet North America SMRTNT  (7)
USA Alabama Department of Transportation - Alabama Great Seal ALDOT  (1)
USA Texas Department of Transportation TxDOT  (3)
USA Federal Aviation Administration FAA  (3)
USA University of Maryland, Baltimore County UMBC  (1)
USA Washington State Reference Network WSRN  (4)
USA NYS Spacial Reference Network NYSDOT  (1)
USA National Geospatial-Intelligence Agency NGA  (8)
USA COLLEGE OF THE ATLANTIC, GIS LABORATORY COA  (1)
USA CICESE Laboratorio del Nivel del Mar CICESE  (1)
USA Massachusetts Department of Transportation MassDOT  (1)
USA University of Maine at Machias UMM  (1)
USA Maine Department of Transportation MaineDOT  (1)
USA UNITED STATES AIR FORCE USAF  (1)
USA Virginia Department of Transportation VDOT  (1)
USA Loyola Spatial Systems LOYSS  (1)
USA Scripps Orbit and Permanent Array Center SOPAC  (1)
USA State of Alaska, Department of Transportation Central Region Survey Section AK-DOT  (2)
USA Pacific GPS Facility - Hawaii Institute of Geophysics and Planetology - University of Hawaii at Manoa PGF  (1)
ZAF The Hartebeesthoek Radio Astronomy Observatory HartRAO  (2)
ZAF National Geo-Spatial Information NGI  (6)

The GPS observations that we provide are in the form of daily 30s files (24h of observations at 30s intervals) in the standard international RINEX format. Further information on the RINEX files.

Apart from the RINEX observation files of the GPS stations, SONEL provides ancillary information which enables a precise analysis of the GPS measurements, in particular :
- the precise orbits of IGS,
- the Earth orientation parameters of IGS.


Evolution of the number of Rinex files available on SONEL (per DOY) since 1991-079






Number of stations whose record length reaches x (years) value.






Cumulative number of stations whose record length is x years or longer.



The GPS observations are published on the anonymous FTP server of SONEL. The conditions of access are that the origin of the data is acknowledged in all communications, oral or written. Further details.

The FileZilla tool is a free client ftp which allows you to access the data. Should you have any problems, the following address will enable you to consult the data on the server via a web interface: http://www.sonel.org/ftpWeb/

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Updated from Wöppelmann et al. (2009) using ULR5 solution

- The processing of GPS observations is particularly complex for the calculation of vertical movements of the land on which the tide gauges are placed (movements of the order of mm/year). The article published in 2007 by the members of the consortium of the ‘ULR’ GPS analysis centre describes the difficulties and the challenges raised by this issue. The figure opposite illustrates the challenges : shown on the left is a series of average sea levels measured with tide gauges ; in the middle the series are corrected with the predictions of the de postglacial rebound model ICE5G (VM2); on the right with the GPS velocities obtained by the ‘ULR’ centre in ITRF2008.

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Cluster Ymir (ULR)

- To meet this challenge SONEL relies on the ULR analysis centre whose computation facilitiy is situated at the University of La Rochelle. The cluster acquired in 2008 reduced significantly the calculation time, from 1 year down to 2-3 weeks to process 10 years of GPS observations from a global network of some 200 stations. This has opened up new perspectives of experimentation and important avenues of research (new strategies, modeling, corrections). In particular, it enabled the ULR group to collaborate with 9 of the most prestigious groups in the spatial field in the first reprocessing campaign of the international service IGS.

- The latest ULR solution published in Global and Planetary Change is available in SONEL as time series of daily positions and velocities. Click on the link below to obtain more details and retrieve the results.

- The members of the ULR consortium

Survey on Continuous GPS and Tide Gauge co-locations (CGPS@TG)

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Survey results table

In order to get a better idea of the status and opportunities on continuous GPS positioning of tide gauges, a survey is carried out periodically within various geoscience communities. The survey aims to identify the existing permanent GPS stations which are close to tide gauges (up to approximately 10-15 km).



- The survey results can be viewed in conjunction with SONEL data holdings on the map (above). Purple symbols correspond to stations for which there are no observations in SONEL yet.

- By clicking on the table icon an on-line updated view of the CGPS@TG information that has been supplied to us is displayed. The table can be sorted by clicking on the column items, and a version of the view (table) can be downloaded in a format compatible with applications like excel (.csv).

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Survey results on .kmz file

- A ’.kmz’ file provides a Google Earth view of the CGPS@TG geographical distribution. The cgpstg.kmz file is consistent with the above mentionned table (updated weekly). Clicking on a station symbol provides ancillary information on the station, and further clicking on the station name provides access to the so-called GPS sitelog (if the GPS data are available). The CGPS@TG ’kmz’ view might be useful in conjunction with the ’.kmz’ files of satellite radar altimetry ground tracks provided by CLS, or with the ’.kmz’ file of tide gauge records provided by the PSMSL.

- In addition to the periodic surveys, information on CGPS@TG co-locations can also be supplied to us any time by filling in this form. Thank you in advance for your collaboration.

- The sitelog generation tool can help you generate a sitelog file for your station, suitable with IGS requirements.