GPS world . vol 28 n° 5Paru le : 01/05/2017 |
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Ajouter le résultat dans votre panierKindred spirits : laser ranging to GNSS satellites / Urs Hugentobler in GPS world, vol 28 n° 5 (May 2017)
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Titre : Kindred spirits : laser ranging to GNSS satellites Type de document : Article/Communication Auteurs : Urs Hugentobler, Auteur Année de publication : 2017 Article en page(s) : pp 42 - 48 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] constellation Galileo
[Termes IGN] erreur systématique
[Termes IGN] positionnement par GNSS
[Termes IGN] rétroréflecteur
[Termes IGN] télémétrie laser sur satelliteRésumé : (Auteur) Satellite laser ranging or SLR has been an indispensable independent tool for validating the precise orbits determined for GNSS satellites using microwave pseudorange and carrierphase observations for several decades. SLR has allowed researchers to identify several orbit-modeling issues. Adding albedo radiation pressure and antenna thrust, among other effects, into the GPS orbit model allowed them to eliminate the observed bias between microwave- and SLR-derived orbits. For the first Galileo satellites launched, SLR residuals indicated severe orbit modeling issues caused by the different shape of Galileo satellite bodies compared to those of GPS. In the future, all GNSS satellites will be equipped with laser retroreflectors, a big challenge for researchers concerning tracking scenarios and observation planning to make economic use of the ground equipment. In this article, we will take a brief look at the history of laser ranging to navigation satellites, how that ranging has improved the accuracy of the orbits of those satellites, and what the future portends for this important contribution to space geodesy. Numéro de notice : A2017-293 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85329
in GPS world > vol 28 n° 5 (May 2017) . - pp 42 - 48[article]