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Auteur Dawid Kwaśniak |
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Mixed integer–real least squares estimation for precise GNSS positioning using a modified ambiguity function approach / Krzysztof Nowel in GPS solutions, vol 22 n° 1 (January 2018)
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Titre : Mixed integer–real least squares estimation for precise GNSS positioning using a modified ambiguity function approach Type de document : Article/Communication Auteurs : Krzysztof Nowel, Auteur ; Sławomir Cellmer, Auteur ; Dawid Kwaśniak, Auteur Année de publication : 2018 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] ambiguïté entière
[Termes IGN] diagramme de Voronoï
[Termes IGN] méthode des moindres carrés
[Termes IGN] phase
[Termes IGN] positionnement par GNSSRésumé : (auteur) Mixed integer–real least squares (MIRLS) estimation still has two open scientific problems, i.e., the validation of results and computational efficiency for a large number of satellites. This paper presents and discusses a non-conventional approach to MIRLS estimation, which belongs to the ambiguity function method (AFM) class. Because the solution is searched for in the constant three-dimensional coordinate domain instead of the n-dimensional ambiguity domain, the computational efficiency does not depend as much on the number of satellites as it does in conventional MIRLS estimation. Simple numerical pretests have shown that the reliability and precision of results from the presented approach and the conventional MIRLS estimation are exactly the same. Hence, the presented approach, contrary to AFM, may be treated as MIRLS estimation. Furthermore, the presented approach is a few hundred times faster than AFM and may be considered in (near) real-time GNSS positioning. In light of the above, the new field of research on MIRLS estimation may be opened. Numéro de notice : A2018-018 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1007/s10291-017-0694-6 Date de publication en ligne : 06/01/2018 En ligne : https://doi.org/10.1007/s10291-017-0694-6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89115
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