The files of average values
Only the daily, monthly and annual averages calculated from quality controlled (QC’ed) data are provided in the data files. However, the graphs show the averages calculated from QC’ed observations (in blue) and non-QC’ed observations (in red). The averages are calculated from the Demerliac filter and the Doodson filter, with the possibility of a choice for the user. An example is given on the image below, which is taken from the web page of the La Rochelle (…)
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How to access the tide gauge observations
20 February 2011, by Guy Woppelmann -
DOI ULR6a solution
16 May 2024, by eprout01– General information Access the data by clicking on the Download tab
Title: GPS Solution ULR6a DOI identifier: 10.26166/sonel_ulr6a Publisher: SONEL Data Center Publication year: 2016 Version: a Temporal coverage: 1995-01-01 / 2014-12-31 Language: English Creators
Alvaro Santamaria-Gomez [1], Médéric Gravelle [2], Guy Wöppelmann [2] Affiliation: [1] GET, Observatoire Midi-Pyrénées/CNRS/IRD/UPS, Toulouse, France. [2] LIENSs, CNRS/ULR, La Rochelle, (…) -
Quelles données GNSS ?
14 février 2008, par Guy WoppelmannLes observations GNSS que nous diffusons se présentent sous forme de fichiers journaliers à 30s (24h d’observations cadencées à 30s) au format standard international RINEX. Plus d’infos sur les fichiers RINEX.
Outre les fichiers d’observation RINEX des stations GNSS, SONEL diffuse toute information auxiliaire permettant l’analyse fine des mesures GNSS, en particulier :
– les orbites précises de l’IGS,
– les paramètres d’orientation de la Terre de l’IGS. Evolution du nombre de (…) -
Data access
14 February 2008, by Guy WoppelmannThe GPS observations are published on the anonymous FTP server of SONEL (ftp.sonel.org). 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. -
About
8 January 2020, by Médéric GravelleThe GNSS solution named ’NGL14’ is produced by the Nevada Geodetic Laboratory (NGL) using a Precise Point Positioning (PPP) data analysis strategy. The GipsyX software (version 1.0) from the Jet Propulsion Laboratory (JPL) is employed to produce daily position time series for over 17,000 globally distributed stations using JPL satellite orbits and clock products expressed in the IGS14 reference frame (Blewitt et al. 2018). The data set covers the period January 1996 to March 2022.
This (…) -
Statistiques
3 novembre 2020, par Médéric GravelleGénéral Centre d’analyse : ULR Nombre de stations : 674 Solution : ULR6B CGPS@TG 482 Date de publication : 2020 Stations de référence 194 Etendue temporelle : 1995.0 - 2013.9 Autres 77 Repère de référence : ITRF 2014
Champs de vitesse vertical Vitesses (robustes) estimées : 493 CGPS@TG 349 Moyenne des erreurs formelles : 0.54 mm/an Médiane des erreurs formelles : 0.36 mm/an -
What GNSS data?
10 December 2010, by Guy WoppelmannThe GNSS 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 GNSS stations, SONEL provides ancillary information which enables a precise analysis of the GNSS measurements, in particular :
– the precise orbits of IGS,
– the Earth orientation parameters of IGS. Evolution of the number of Rinex files (…) -
Statistiques
27 janvier 2020, par Médéric GravelleChamps de vitesse vertical Vitesses (robustes) estimées : 436 CGPS@TG 281 Moyenne des erreurs formelles : 0.42 mm/an Médiane des erreurs formelles : 0.32 mm/an
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Statistics
27 May 2022, by Médéric GravelleVertical velocity field Estimated (robust) velocities: 546 CGPS@TG 461 Average of formal errors: 0.38 mm/yr Median of formal errors: 0.28 mm/yr
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Statistiques
17 octobre 2013, par eprout01Ce graphe montre l’évolution du nombre de fichiers Rinex disponibles sur SONEL (par DOY) depuis 1990-079