GPS world . vol 28 n° 4Paru le : 01/04/2017 |
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Ajouter le résultat dans votre panierPrecision on board : orbit determination of LEO satellites with real-time corrections / André Hauschild in GPS world, vol 28 n° 4 (April 2017)
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Titre : Precision on board : orbit determination of LEO satellites with real-time corrections Type de document : Article/Communication Auteurs : André Hauschild, Auteur ; Javier Tegedor, Auteur ; Oliver Montenbruck, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp 42 - 47 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Techniques orbitales
[Termes IGN] éphémérides de satellite
[Termes IGN] orbite basse
[Termes IGN] orbitographie
[Termes IGN] précision du positionnement
[Termes IGN] simulation
[Termes IGN] temps réelRésumé : (Auteur) Precise point positioning (PPP) with real-time orbit and clock correction streams has become an established technique over the past decade. Several free as well as commercial sources of precise correction streams are available through the internet or via a satellite link to geostationary satellites. Many applications exist for land, air and sea applications, but use of real-time corrections for precise positioning has not extended into orbit yet, although a number of low Earth orbit (LEO) satellite missions have a demand for precise orbit determination (POD). Mission requirements often allow for a relatively high latency for the availability of the precise orbit products, thus ground-based, near-real-time processing is sufficient. However, future satellites with altimeter and radio-occultation payloads may require real-time POD to enable onboard processing of science data for short-term forecasting or now-casting of meteorology data, open-loop instrument operations of radar payloads, or quick-look onboard science data generation. Also, precise real-time orbit information may be used for constellation maintenance of satellite formations. Despite early technology readiness demonstrations by the Jet Propulsion Laboratory carried out one decade ago to transmit real-time corrections via geostationary relay satellites to LEO spacecraft, this technique has so far not been implemented and used in a space mission. Numéro de notice : A2017-292 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85327
in GPS world > vol 28 n° 4 (April 2017) . - pp 42 - 47[article]