GPS world . vol 15 n° 7Paru le : 01/07/2004 ISBN/ISSN/EAN : 1048-5104 |
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Ajouter le résultat dans votre panierHow good does it get? Polaris: demonstrating performance levels of positioning technologies / A. Gavin-Alarcon in GPS world, vol 15 n° 7 (July 2004)
[article]
Titre : How good does it get? Polaris: demonstrating performance levels of positioning technologies Type de document : Article/Communication Auteurs : A. Gavin-Alarcon, Auteur ; K. Sheridan, Auteur ; A. Mark, Auteur Année de publication : 2004 Article en page(s) : pp 22 - 28 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] Global Navigation Satellite System
[Termes IGN] navigation automobile
[Termes IGN] navigation ferroviaire
[Termes IGN] navigation maritime
[Termes IGN] navigation pédestre
[Termes IGN] performanceRésumé : (Auteur) New markets and professional applications are emerging to take advantage of the improvements in navigation performances that can be obtained by using complementary sensors and systems with GNSS. A new software tool, named Polaris, provides the means to demonstrate the benefits to be gained within these markets (road, pedestrian, railway, maritime). Numéro de notice : A2004-591 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27107
in GPS world > vol 15 n° 7 (July 2004) . - pp 22 - 28[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 067-04071 SL Revue Centre de documentation Revues en salle Disponible Spacecraft formation flying: relative positioning using dual-frequency carrier phase / Remco Kroes in GPS world, vol 15 n° 7 (July 2004)
[article]
Titre : Spacecraft formation flying: relative positioning using dual-frequency carrier phase Type de document : Article/Communication Auteurs : Remco Kroes, Auteur ; Oliver Montenbruck, Auteur Année de publication : 2004 Article en page(s) : pp 37 - 42 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] GPS en mode cinématique
[Termes IGN] GPS en mode différentiel
[Termes IGN] mesurage de pseudo-distance
[Termes IGN] phase GPS
[Termes IGN] positionnement différentiel
[Termes IGN] récepteur bifréquenceRésumé : (Auteur) On July 16, 1982, a Delta launch vehicle propelled the Landsat-4 remote sensing satellite into orbit. This satellite, the fourth in the United States' Landsat program, carried a new suite of sensors which produced data of such detail and clarity that its use represented a major advance in Earth observations from space. In addition, Landsat-4 carried the first GPS receiver into orbit. Although only a few of the prototype Block I GIPS satellites were available at the time, Landsat-4's GPS receiver demonstrated that a spacecraft could be navigated with GPS to an accuracy better than 50 meters. Since that inaugural flight, dozens of GPS receivers have flown in space.These receivers have not only provided accurate positions and velocities of their host spacecraft but also determined spacecraft attitude and accurate time for spacecraft sensors, and profiled the atmosphere by observing GPS satellites as they are occulted by the Earth's limb. In this month's column, we look at yet another application of GPS in space : precisely determining the relative positions of cooperative spacecraft flying in formation. Simultaneous measurements by multiple formation-flying satellites can provide significant benefits to a wide variety of space missions. Such measurements can yield higher-resolution imagery and interferometry or information on small-scale spatial variations in atmospheric properties or gravity. The concept can also be extended to provide robust and redundant fault-tolerant spacecraft system architectures and complex networks dispersed over clusters of satellites. Some of these applications require knowing the precise location of each cooperating spacecraft. Dual-frequency GPS carrier-phase observations can provide the required precision. Numéro de notice : A2004-597 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27113
in GPS world > vol 15 n° 7 (July 2004) . - pp 37 - 42[article]Réservation
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