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Auteur D. Féraudy |
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Titre : Satellite Laser Ranging biases and terrestrial reference frame scale factor Type de document : Article/Communication Auteurs : David Coulot , Auteur ; Philippe Berio, Auteur ; Pascal Bonnefond, Auteur ; Pierre Exertier, Auteur ; D. Féraudy, Auteur ; Olivier Laurain, Auteur ; Florent Deleflie, Auteur
Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2009 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 133 Conférence : IAG 2007, International Association of Geodesy General Assembly Perugia Italie Proceedings Springer Importance : pp 39 - 46 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] données TLS (télémétrie)
[Termes IGN] erreur systématique
[Termes IGN] facteur d'échelle
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] repère de référenceRésumé : (auteur) We examine the impact of the strategy adopted regarding range biases on Satellite Laser Ranging data processing results. More especially, we test the stability of the weekly Terrestrial Reference Frame scale factors computed w.r.t. ITRF2000 according to the two different strategies which are studied in this paper. In the first approach, range biases are not considered in the data processing. In the second approach, we use a temporal de-correlation method to rigorously estimate all station range biases. The first approach provides weekly scale factors with a piece-wise behavior. More precisely, the time series exhibit a drift of − 2.5 ± 0.2 mm/yr between 2001.0 and 2006.0 and provide a RMS of 5.2 mm. The second approach, which makes the most physical sense, really provides regular weekly scale factors. Indeed, between 2001.0 and 2006.0, these series exhibit a drift of − 0.7 ± 0.2 mm/yr and the RMS of the whole time series is 3.7 mm. Moreover, less discontinuities are detected in the station position residual time series provided by the second approach than in those produced with the first approach. Numéro de notice : C2009-029 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-540-85426-5_5 En ligne : https://doi.org/10.1007/978-3-540-85426-5_5 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90692
contenu dans Proceedings of the 15th international workshop on laser ranging, Canberra, Australia, 15 - 20 October 2006 / J. Luck (2008)
Titre : An original approach to compute Satellite Laser Range biases Type de document : Article/Communication Auteurs : David Coulot Editeur : Griffith (Australie) : EOS Space systems Année de publication : 2008 Conférence : IWLR 2006, 15th international workshop on laser ranging, Extending the range 15/10/2006 20/10/2006 Canberra Australie OA proceedings Importance : pp 110 - 119 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] données TLS (télémétrie)
[Termes IGN] erreur systématique
[Termes IGN] télémétrie laser sur satelliteRésumé : (auteur) Although they are permanently calibrated, the Satellite Laser Ranging (SLR) stations can present residual systematic errors, the well-known “range biases”. These biases must be considered in any SLR data processing. Indeed, they are strongly correlated with the Up component of the station positions. Thus, if they are not computed together with these positions, they can induce jumps in these latter and consequently damage the global scale factor of the underlying Terrestrial Reference Frame with respect to any given reference. On the other hand, estimating range biases together with station positions is not so easy, due to the previously mentioned correlations. In this paper, we describe a new approach to derive range bias values together with station positions: the so-called “temporal de-correlation” approach. This method consists in computing station range biases per satellite over a “long” period of time (determined by instrumental changes) together with weekly station position time series in order to significantly reduce the correlations. Numéro de notice : C2006-032 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Poster nature-HAL : Poster-avec-CL DOI : sans En ligne : https://cddis.nasa.gov/lw15/docs/papers/An%20Original%20Approach%20to%20Compute% [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102699 Documents numériques
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An original approach ... - pdf éditeurAdobe Acrobat PDFAnalysis of 13 years (1993-2005) of Satellite Laser Ranging data on the two LAGEOS satellites for Terrestrial Reference Frames and Earth Orientation Parameters / David Coulot (2008)
contenu dans Proceedings of the 15th international workshop on laser ranging, Canberra, Australia, 15 - 20 October 2006 / J. Luck (2008)
Titre : Analysis of 13 years (1993-2005) of Satellite Laser Ranging data on the two LAGEOS satellites for Terrestrial Reference Frames and Earth Orientation Parameters Type de document : Article/Communication Auteurs : David Coulot Editeur : Griffith (Australie) : EOS Space systems Année de publication : 2008 Conférence : IWLR 2006, 15th international workshop on laser ranging, Extending the range 15/10/2006 20/10/2006 Canberra Australie OA proceedings Importance : pp 120 - 130 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] analyse diachronique
[Termes IGN] données TLS (télémétrie)
[Termes IGN] LageosRésumé : (auteur) The quality presently reached by space-geodetic techniques, regarding precision, accuracy such as spatial and temporal distributions of their measurements, allows us to compute time series of geodetic products. In this context, we have developed a method to compute time series of Earth Orientation Parameters (EOPs) and terrestrial station positions through the analysis of Satellite Laser Ranging (SLR) data. This technique being an important basis for the computation of the International Terrestrial Reference Frame, it is crucial to derive accurate time series with a rigorous approach. Furthermore, this method will be used by the scientific department GEMINI of the Observatoire de la Côte d’Azur when it will become an official ILRS analysis center. These times series are obtained with a good accuracy and a reasonable sampling (1 day for EOPs and 1 week for station positions). This good accuracy is ensured by i) a rigorous weighting of SLR measurements per satellite and per station; ii) a kinematic approach to compute orbital residual errors; iii) a rigorous control of range biases which is detailed in [Coulot et al., 2007]. In this paper, we first present the two aspects i) and ii) of our method. In a second part, we analyze 13 years (1993-2005) of SLR data on both LAGEOS satellites in order to study the Terrestrial Reference Frames and the EOPs so computed. Numéro de notice : C2006-033 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Poster nature-HAL : Poster-avec-CL DOI : sans En ligne : https://cddis.nasa.gov/lw15/docs/papers/13%20Years%20of%20SLR%20Data%20on%20the% [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102700 Documents numériques
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Analysis of 13 years .... - pdf éditeurAdobe Acrobat PDF
Titre : OCA/GEMINI-GRGS becoming an official ILRS analysis center Type de document : Article/Communication Auteurs : Florent Deleflie, Auteur ; Philippe Berio, Auteur ; David Coulot Editeur : Société française d'astronomie et d'astrophysique SF2A Année de publication : 2006 Conférence : SF2A 2006, annual meeting of the French Society of Astronomy & Astrophysics 26/06/2006 30/06/2006 Paris France OA Proceedings Langues : Anglais (eng) Résumé : (auteur) OCA/GEMINI-GRGS is currently moving from its status of an associate ILRS analysis center to an official ILRS analysis center. The ILRS (International Laser Ranging System) is one of the nine services of the International Association of Geodesy (IAG). This new status should permit to GRGS to validate and, especially, enlighten in an easy way its scientific results coming from SLR data, within this international organization. Numéro de notice : C2006-036 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésNat DOI : sans En ligne : http://proceedings.sf2a.eu/2006/2006sf2a.conf..0011D.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102709 Documents numériques
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OCA/GEMINI-GRGS ... - pdf éditeurAdobe Acrobat PDF
