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Ground Based Augmentation Systems: A dual frequency approach

Palczynska, Marita (2007) Ground Based Augmentation Systems: A dual frequency approach. Diplomarbeit, University of Poznan.

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Kurzfassung

Ground Based Augmentation System (GBAS) is the only possible satellite based radio navigation system able in a close future to achieve CAT II/III landing. The actual GBAS architecture using single frequency GPS has limitations in availability of integrity and can only achieve CAT I landings. The work I am going to present in the frame of my Diploma work details the possible strategies of dual frequency GBAS that can achieve the highest level of requirements (i.e. CAT III) for GPS as well as for Galileo navigation system. One of the highest threats for CAT II/III is the ionosphere gradient that can appear between the user and the ground GBAS subsystem during e.g. ionospheric anomaly. In order to minimize the negative influence of ionosphere gradient on the obtained results, different smoothing techniques can be used. The three smoothing techniques are presented in my work and their robustness against ionosphere anomaly is investigated. Simulations have been done with respect to different ionospheric gradient scenarios and using different combination of observables. Vertical protection levels and the availability of the integrity with respect to CAT II/III requirements is presented on the base of which the effectiveness of presented smoothing technologies is investigated. A conclusion and proposed future work ends this Diploma work.

Dokumentart:Hochschulschrift (Diplomarbeit)
Titel:Ground Based Augmentation Systems: A dual frequency approach
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Palczynska, MaritaUniversity of Poznan
Datum:Juni 2007
Seitenanzahl:93
Status:nicht veröffentlicht
Stichwörter:GBAS, Integrity, Galileo, GPS, Dual frequency, Divergence free, Ionosphere free
Institution:University of Poznan
Abteilung:Elektrotechnik
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W KN - Kommunikation/Navigation
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W KN - Kommunikation/Navigation
DLR - Teilgebiet (Projekt, Vorhaben):W - Projekt GalileoNAV (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation
Hinterlegt von: Boubeker Belabbas
Hinterlegt am:27 Aug 2007
Letzte Änderung:27 Apr 2009 14:15

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