elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

On-Ground Attitude and Torque Reconstruction tor the Gaia Mission

Samaan, Malak und Theil, Stephan (2008) On-Ground Attitude and Torque Reconstruction tor the Gaia Mission. In: Proceedings of the AAS/AIAA Space Flight Mechanics Winter Meeting 2008. AAS/AIAA Space Flight Mechanics Winter Meeting; 2008, 2008-01-27 - 2008-01-31, Galveston, Texas (USA).

[img]
Vorschau
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
1MB

Kurzfassung

The work presented in this paper concerns the accurate On-Ground Attitude (OGA) reconstruction for the astrometry spacecraft Gaia in the presence of disturbance and control torques acting on the spacecraft. The reconstruction of the expected environmental torques which influence the spacecraft dynamics will be also investigated. The telemetry data from the spacecraft will include the on-board real time attitude which is of order of several arcsec. This raw attitude is the starting point for the further attitude reconstruction. The OGA will use the inputs from the field coordinates of known stars (attitude stars) and also the field coordinate differences of objects on the Sky Mapper (SM) and Astrometric Field (AF) payload instruments to improve this raw attitude. The on-board attitude determination uses Kalman Filter (KF) to minimize the attitude errors and produce more accurate attitude estimation than the pure star tracker measurement. Therefore the first approach for the OGA will be an adapted version of KF. Furthermore, we will design a batch least squares algorithm to investigate having more accurate OGA estimation. Finally, a comparison between these different attitude determination techniques in terms of accuracy, robustness, speed and memory required will be evaluated in order to choose the best attitude algorithm for the OGA. The expected resulting accuracy for the OGA determination will be on the order of milli-arcsec.

Dokumentart:Konferenzbeitrag (Paper)
Titel:On-Ground Attitude and Torque Reconstruction tor the Gaia Mission
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Samaan, MalakNICHT SPEZIFIZIERT
Theil, StephanNICHT SPEZIFIZIERT
Datum:Januar 2008
Erschienen in:Proceedings of the AAS/AIAA Space Flight Mechanics Winter Meeting 2008
Referierte Publikation:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:attitude determination, reconstruction, Kalman Filter
Veranstaltungstitel:AAS/AIAA Space Flight Mechanics Winter Meeting; 2008
Veranstaltungsort:Galveston, Texas (USA)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2008-01-27 - 2008-01-31
Veranstalter :AAS/AIAA
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W - keine Zuordnung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):W -- keine Zuordnung (alt)
Standort: Bremen
Institute & Einrichtungen:Institut für Raumfahrtsysteme > Regelungs- und Datensysteme
Hinterlegt von: Dr.-Ing. Stephan Theil
Hinterlegt am:12 Jan 2009
Letzte Änderung:12 Dez 2013 20:35

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.