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Multipath Rejection Using Multi-Signal Multicorrelator Based GNSS Receiver With an Extended Kalman Filter

Siebert, Christian und Konovaltsev, Andriy und Meurer, Michael (2021) Multipath Rejection Using Multi-Signal Multicorrelator Based GNSS Receiver With an Extended Kalman Filter. In: Proceedings of the 34th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2021, Seiten 3422-3436. 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021), 2021-09-20 - 2021-09-24, St. Louis, USA. doi: 10.33012/2021.17980. ISBN 978-093640629-9.

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Offizielle URL: https://www.ion.org/publications/abstract.cfm?articleID=17980

Kurzfassung

In Global Navigation Satellite Systems (GNSSs), multipath propagation is still a major source of error, in particular in urban environment. Obstacles in the nearer receiver environment can reflect satellite signals leading to additional delayed signal replicas at the receiver. This causes conventional GNSS receivers to provide biased range estimates leading to Position, Velocity and Time (PVT) errors. Especially newly arising safety-relevant applications, such as autonomous cars or unmanned aerial vehicles, raise demand for high accuracy and fail-safe positioning. GNSS positioning with deviations of several meters, as it may well occur in multipath environments, would be insufficient here. A novel multi-signal Extended Kalman Filter (EKF) based multipath mitigation solution is proposed. It relies on a multicorrelator structure replacing the conventional Delay Locked Loop (DLL) code tracking. The multipath rejection is implemented through the underlying signal model of the EKF. It is incorporating the radio propagation channel between satellite and receiver, inherently accounting for reflected signal replicas. In addition to the increased resilience against multipath propagation, an estimate of the Channel Impulse Response (CIR) of the radio channel is obtained. Furthermore, this approach is also able to track in one GNSS frequency multiple signals per satellite simultaneously, exploiting the advantage of increased signal power and robustness. The functionality of the multi-signal EKF has been demonstrated with simulations and compared to a conventional receiver with a hardware GNSS constellation simulator. The results were subsequently verified with actual measurements. The proposed approach turned out to be very effective against multipath. Pseudorange errors were able to be reduced drastically leading to more accurate positioning.

elib-URL des Eintrags:https://elib.dlr.de/145792/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Multipath Rejection Using Multi-Signal Multicorrelator Based GNSS Receiver With an Extended Kalman Filter
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Siebert, ChristianChristian.Siebert (at) dlr.dehttps://orcid.org/0000-0001-7228-5488153688269
Konovaltsev, AndriyAndriy.Konovaltsev (at) dlr.dehttps://orcid.org/0009-0003-1876-579XNICHT SPEZIFIZIERT
Meurer, MichaelMichael.Meurer (at) dlr.dehttps://orcid.org/0000-0001-7465-6705NICHT SPEZIFIZIERT
Datum:September 2021
Erschienen in:Proceedings of the 34th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2021
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Nein
DOI:10.33012/2021.17980
Seitenbereich:Seiten 3422-3436
ISBN:978-093640629-9
Status:veröffentlicht
Stichwörter:GNSS Receiver, Multipath Mitigation, Multi-Signal Tracking, Multicorrelator, EKF
Veranstaltungstitel:34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021)
Veranstaltungsort:St. Louis, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:20 September 2021
Veranstaltungsende:24 September 2021
Veranstalter :Institute of Navigation
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Kommunikation, Navigation, Quantentechnologien
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R KNQ - Kommunikation, Navigation, Quantentechnologie
DLR - Teilgebiet (Projekt, Vorhaben):R - Projekt Navigation 4.0
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Navigation
Hinterlegt von: Siebert, Christian
Hinterlegt am:24 Nov 2021 16:49
Letzte Änderung:24 Apr 2024 20:44

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