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

Hardware-in-the-loop Simulation of GNSS Signal Tracking in Highly Elliptical Orbits Using the GSNRx Software Receiver

Kahr, Erin und O'Keefe, Kyle und Montenbruck, Oliver (2014) Hardware-in-the-loop Simulation of GNSS Signal Tracking in Highly Elliptical Orbits Using the GSNRx Software Receiver. In: Proceedings ION-GNSS+-2014. ION-GNSS+2014, 2014-09-10 - 2014-09-12, Tampa, FL.

Dieses Archiv kann nicht den Volltext zur Verfügung stellen.

Kurzfassung

The University of Calgary PLAN group’s GSNRxTM software receiver has been updated for use in orbital simulations. The updates included redesigned algorithms for satellite visibility calculations, the inclusion of a Kepler orbit model, an updated channel allocation strategy, a navigation solution reset when an insufficient number of GPS satellites are being tracked, and disabling the tropospheric corrections in the navigation solution. The redesigned GSNRxTM has been used for hardware in the loop simulations of tracking and navigation in highly elliptical orbit (HEO). The HEO scenario has been set up based on the orbital parameters of the European Space Agency’s planned Proba-3 mission. A realistic link budget has been assumed, and error sources such as ionospheric delay and GPS orbital errors have been simulated. Under the HEO simulation conditions, the receiver reliably acquires signals at 37 dB-Hz and stronger, and is able to maintain lock under HEO orbital dynamics. Loss of lock typically occurs between 28 and 30 dB-Hz for fading signals, with some signals tracked to 26 dB-Hz. The measurement noise is highly correlated with the highly variable HEO signal strength and is slightly higher than the theoretical thermal noise tracking jitter at the same carrier to noise density ratios. The receiver’s single point navigation solution agrees well with the simulated trajectory where ionospheric errors are small, but is highly sensitive to the ionospheric range delay on setting GPS satellites as positioning geometry weakens at high altitude. An initial filtered navigation solution was calculated using an extended Kalman filter to combine the GPS measurements with an orbital model. The filtered results were accurate to the meter level during the two perigee passages when position fixes were possible, and diverged to a few hundred meters during the 18 hour arc between fixes. Future work will include research into multi-constellation tracking, and relative positioning for formation flying satellites in HEO.

elib-URL des Eintrags:https://elib.dlr.de/92119/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Hardware-in-the-loop Simulation of GNSS Signal Tracking in Highly Elliptical Orbits Using the GSNRx Software Receiver
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Kahr, ErinUniv. CalgaryNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
O'Keefe, KyleUniv. of CalgaryNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Montenbruck, OliverDLR/GSOCNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2014
Erschienen in:Proceedings ION-GNSS+-2014
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:GNSS; HEO
Veranstaltungstitel:ION-GNSS+2014
Veranstaltungsort:Tampa, FL
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:10 September 2014
Veranstaltungsende:12 September 2014
Veranstalter :ION
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Technik für Raumfahrtsysteme
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R SY - Technik für Raumfahrtsysteme
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Infrastruktur und Unterstützung für Raumflugbetrieb (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Raumflugbetrieb und Astronautentraining
Hinterlegt von: Montenbruck, Dr.rer.nat.hab. Oliver
Hinterlegt am:19 Nov 2014 09:46
Letzte Änderung:24 Apr 2024 19:57

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

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