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Architectural Elements of Hybrid Navigation Systems for Future Space Transportation

Trigo, Guilherme Fragoso und Theil, Stephan (2017) Architectural Elements of Hybrid Navigation Systems for Future Space Transportation. 10th International ESA Conference on Guidance, Navigation and Control Systems, 2017-05-29 - 2017-06-02, Salzburg, Austria.

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Kurzfassung

In this work we analyse several architectural elements and design aspects of a hybrid GNSS/INS navigation system conceived for space transportation. The fundamental limitations of the purely-inertial method, currently employed by most launchers, has raised interest for GNSS-aided solutions. Combination of inertial measurements and GNSS outputs allows inertial calibration on-line, solving the issue of inertial drift. However, many challenges and design options unfold. The most fundamental architectural features such as coupling depth, modularity between filter and inertial propagation, and open-/closed-loop nature of the configuration, are discussed in the light of the envisaged application. Importance of the inertial propagation algorithm and sensor class in the overall system is investigated, being the handling of sensor errors and uncertainties that arise with lower grade sensory also considered. In terms of GNSS outputs we consider receiver solutions (Position and Velocity) and raw measurements (Pseudorange, Pseudorange-rate and Time-Differenced Carrier Phase). Receiver clock handling options and atmospheric error correction schemes for these measurements are analysed under flight conditions. System performance with different GNSS measurements is estimated through covariance analysis, being the differences between Loose and Tight coupling emphasised through partial outage simulation. Finally, we discuss options for filter algorithm robustness against non-linearities and system/measurement errors. A possible scheme for Fault Detection, Isolation and Recovery is also proposed.

elib-URL des Eintrags:https://elib.dlr.de/112619/
Dokumentart:Konferenzbeitrag (Vorlesung)
Titel:Architectural Elements of Hybrid Navigation Systems for Future Space Transportation
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Trigo, Guilherme Fragosoguilherme.trigo (at) dlr.dehttps://orcid.org/0000-0001-8173-9592NICHT SPEZIFIZIERT
Theil, Stephanstephan.theil (at) dlr.dehttps://orcid.org/0000-0002-5346-8091NICHT SPEZIFIZIERT
Datum:2017
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:GNSS/INS navigation, inertial navigation, loosely coupled, tightly coupled, launch vehicle navigation
Veranstaltungstitel:10th International ESA Conference on Guidance, Navigation and Control Systems
Veranstaltungsort:Salzburg, Austria
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:29 Mai 2017
Veranstaltungsende:2 Juni 2017
Veranstalter :ESA
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):R - keine Zuordnung
Standort: Bremen
Institute & Einrichtungen:Institut für Raumfahrtsysteme > Navigations- und Regelungssysteme
Hinterlegt von: Trigo, Guilherme Fragoso
Hinterlegt am:08 Jun 2017 10:22
Letzte Änderung:24 Apr 2024 20:17

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