Applications géodésiques du système DORIS à l'Institut géographique national

Resume L'IGN a la responsabilite de l'installation et de la maintenance des stations du reseau d'orbitographie DORIS. Plus recemment, en liaison avec le JPL, il s'est implique dans les calculs de localisation precise DORIS. Le but de cet article est de rappeler historiquement les differentes contributions de l'IGN dans leur contexte geodesique international et de decrire ensuite les nouvelles methodes d'estimation developpees pour traiter les mesures DORIS en mode multi-satellites, en particulier les aspects lies aux horloges a bord et aux corrections tropospheriques. Les resultats de localisation obtenus montrent des precisions de l'ordre du centimetre. Pour citer cet article : P. Willis et al., C. R. Geoscience 337 (2005).

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