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Auteur Ole Roggenbuck |
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Titre : IVS contribution to ITRF2014 Type de document : Article/Communication Auteurs : Sabine Bachmann, Auteur ; Daniela Thaller, Auteur ; Ole Roggenbuck, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 631 – 654 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] coordonnées géodésiques
[Termes IGN] International Terrestrial Reference System
[Termes IGN] précision des données
[Termes IGN] station de référence
[Termes IGN] station permanente
[Termes IGN] station VLBIRésumé : (auteur) Every few years the International Terrestrial Reference System (ITRS) Center of the International Earth Rotation and Reference Systems Service (IERS) decides to generate a new version of the International Terrestrial Reference Frame (ITRF). For the upcoming ITRF2014 the official contribution of the International VLBI Service for Geodesy and Astrometry (IVS) comprises 5796 combined sessions in SINEX file format from 1979.6 to 2015.0 containing 158 stations, overall. Nine AC contributions were included in the combination process, using five different software packages. Station coordinate time series of the combined solution show an overall repeatability of 3.3 mm for the north, 4.3 mm for the east and 7.5 mm for the height component over all stations. The minimum repeatabilities are 1.5 mm for north, 2.1 mm for east and 2.9 mm for height. One of the important differences between the IVS contribution to the ITRF2014 and the routine IVS combination is the omission of the correction for non-tidal atmospheric pressure loading (NTAL). Comparisons between the amplitudes of the annual signals derived by the VLBI observations and the annual signals from an NTAL model show that for some stations, NTAL has a high impact on station height variation. For other stations, the effect of NTAL is low. Occasionally other loading effects have a higher influence (e.g. continental water storage loading). External comparisons of the scale parameter between the VTRF2014 (a TRF based on combined VLBI solutions), DTRF2008 (DGFI-TUM realization of ITRS) and ITRF2008 revealed a significant difference in the scale. A scale difference of 0.11 ppb (i.e. 0.7 mm on the Earth’s surface) has been detected between the VTRF2014 and the DTRF2008, and a scale difference of 0.44 ppb (i.e. 2.8 mm on the Earth’s surface) between the VTRF2014 and ITRF2008. Internal comparisons between the EOP of the combined solution and the individual solutions from the AC contributions show a WRMS in X- and Y-Pole between 40 and 100 μas and for dUT1 between 5 and 15 μs. External comparisons with respect to the IERS-08-C04 series show a WRMS of 132 and 143 μas for X- and Y-Pole, respectively, and 13 μs for dUT. Numéro de notice : A2016-426 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-016-0899-4 En ligne : http://dx.doi.org/10.1007/s00190-016-0899-4 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81320
in Journal of geodesy > vol 90 n° 7 (July 2016) . - pp 631 – 654[article]Oceanwide precise determination of sea surface height from in-situ measurements on cargo ships / Ole Roggenbuck in Marine geodesy, vol 37 n° 1 (March - May 2014)
[article]
Titre : Oceanwide precise determination of sea surface height from in-situ measurements on cargo ships Type de document : Article/Communication Auteurs : Ole Roggenbuck, Auteur ; Jörg Reinking, Auteur ; Alexander Härting, Auteur Année de publication : 2014 Article en page(s) : pp 77 - 96 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse comparative
[Termes IGN] données GNSS
[Termes IGN] données Jason
[Termes IGN] hauteurs de mer
[Termes IGN] Pacifique (océan)
[Termes IGN] précision centimétrique
[Vedettes matières IGN] AltimétrieRésumé : (Auteur) Thanks to the latest developments in GNSS data processing the antenna heights aboard a ship can be determined with accuracies of up to 5 cm, also in the open ocean. These heights are a good basis to derive precise in-situ data of sea surface heights independently from satellite altimetry. However, for a reliable determination of sea surface heights, some essential hydrostatic and hydrodynamic corrections must be considered, as explained in this paper. Furthermore, an ocean wide determination of sea surface height from measurements on a container ship in the Pacific Ocean is presented. The results are compared with those from the Jason-2 altimeter. Numéro de notice : A2015-164 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1080/01490419.2013.868385 Date de publication en ligne : 14/01/2019 En ligne : https://doi.org/10.1080/01490419.2013.868385 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75851
in Marine geodesy > vol 37 n° 1 (March - May 2014) . - pp 77 - 96[article]Réservation
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