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/ | ||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
Titel: | Multipath Rejection Using Multi-Signal Multicorrelator Based GNSS Receiver With an Extended Kalman Filter | ||||||||||||||||
Autoren: |
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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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