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Analysis of DORIS range-rate residuals for TOPEX/Poseidon, Jason, Envisat and SPOT / Eelco Doornbos in Acta Astronautica, vol 60 n° 8-9 (April - May 2007)  

Public [article]  inActa Astronautica > vol 60 n° 8-9 (April - May 2007) . - pp 611 - 621 Titre : Analysis of DORIS range-rate residuals for TOPEX/Poseidon, Jason, Envisat and SPOT Type de document : Article/Communication Auteurs : Eelco Doornbos, Auteur ; Pascal Willis , Auteur Année de publication : 2007 Article en page(s) : pp 611 - 621 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes IGN] antenne DORIS [Termes IGN] centre de phase [Termes IGN] DORIS [Termes IGN] erreur systématique [Termes IGN] orbitographie Résumé : (auteur) Three currently operational radar altimeter satellites are equipped with the Doppler orbitography and radiopositioning integrated by satellite (DORIS) tracking system for precise orbit determination and two more are already foreseen. Any systematic errors in their computed orbits could possibly adversely affect scientific products used in climate change studies, such as sea level and ice sheet heights. DORIS residuals, which can be interpreted as a measure of orbit determination performance, often show systematic errors. We have therefore analyzed long time series of DORIS range-rate residuals in order to investigate possible systematic errors common to all DORIS analysis strategies and software packages, either on a satellite or on a station basis. In particular, the investigation has focused on global DORIS data of six satellites (TOPEX, Jason, Envisat and SPOT-2, -4 and -5) and station-specific data for Fairbanks, Easter Island and Syowa Base. Large measurement errors when crossing the South Atlantic Anomaly are easily detected in the DORIS residuals of Jason, while Envisat residuals show the most prominent evidence of multipath interference and the effect of a flight software update. Particularly, large errors were also found in low-elevation data. Numéro de notice : A2007-677 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.actaastro.2006.07.012 Date de publication en ligne : 09/10/2006 En ligne : https://doi.org/10.1016/j.actaastro.2006.07.012 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102768 [article]