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Untersuchungen zu hochpräzisen kinematischen DGPS-Echtzeitverfahren mit besonderer Berücksichtigung atmosphärischer Fehlereinflüsse / H. Blomenhofer (1996)

Public Titre : Untersuchungen zu hochpräzisen kinematischen DGPS-Echtzeitverfahren mit besonderer Berücksichtigung atmosphärischer Fehlereinflüsse Titre original : [Recherches pour des procédés DGPS cinématique de haute précision en temps réel en considérant particulièrement les influences de l'erreur atmosphérique] Type de document : Monographie Auteurs : H. Blomenhofer, Auteur Editeur : Munich : Universität der Bundeswehr Année de publication : 1996 Collection : Schriftenreihe des Instituts für Geodäsie, ISSN 0173-1009 num. 51 Importance : 165 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes IGN] GPS en mode cinématique [Termes IGN] GPS en mode différentiel [Termes IGN] réfraction atmosphérique Index. décimale : 30.61 Systèmes de Positionnement par Satellites du GNSS Résumé : (Auteur) Applying real-time differential GPS techniques for navigation and positioning the errors in signal spreading could be identified as limiting factors of accuracy and integrity. These are the atmospheric refractions in troposphere and ionosphere and multipath errors. After a short introduction to GPS, its signal structure and signal reception, a real-time capable differential GPS model is presented. Positioning techniques using carrier phase smoothing and also carrier phase ambiguity fixing are considered also. The influence of the tropospheric and ionospheric refraction on signal spreading and also of multipath effects is investigated. The usage of models for the elimination of these error sources is discussed. The remaining differential errors after modelling and its influence to real-time positioning is shown also. The remaining atmospheric errors turned out to be significant in carrier phase ambiguity fixing. Therefore the new method ,Functional Integer Scaling for Ambiguity Resolution (FISAR)" was developed to eliminate these atmospheric residuals. This method is based on a functional dependency of the atmospheric refraction in the satellite signal spreading at each GPS observer. In geodetic baseline measurements the estimation of a tropospheric scaling I-actor for the elimination of these residuals is a usual method. For the ionospheric refraction a similar scaling factor can be introduced. In FISAR the tropospheric and the ionospheric scaling factor are combined. FISAR was tested extensively in simulations. In the experiment ,GPS in Buoys" this method was applied successfully for the first time to estimate and eliminate differential differences in atmospheric signal spreading. Numéro de notice : 61591 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=60958

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
61591-01	30.61	Livre	Centre de documentation	Géodésie	Disponible