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Multi-station Analysis of Antenna Gain Patterns of GLONASS Satellites

Allende-Alba, Gerardo und Thölert, Steffen und Steigenberger, Peter und Montenbruck, Oliver (2022) Multi-station Analysis of Antenna Gain Patterns of GLONASS Satellites. In: 2022 International Technical Meeting of The Institute of Navigation, ITM 2022. International Technical Meeting 2022, Institute of Navigation, 25.-27. Jan. 2022, Long Beach, Kalifornien. doi: 10.33012/2022.18244. ISBN 978-093640630-5. ISSN 2330-3646.

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Kurzfassung

The increasing number of GNSS applications with reliability and integrity demands calls for the implementation of monitoring systems that can be used to improve the employed error and threat models. For signal power monitoring systems, a characterization of satellite antennas plays an important role. In previous studies, a methodology for reconstructing gain patterns of Galileo satellite antennas using signal power observations from a single monitoring station has been proposed. Such a scheme has been recently extended to a multi-station approach. The present contribution explores the application of single and multi station approaches for the case of GLONASS satellites in the context of antenna performance monitoring. It has been motivated by the observation during a routine data exploration of a sudden power decrease of the signal transmitted by the GLONASS satellite R720 in the G1 band on April 4, 2019. In order to evaluate the influence of the satellite antenna on such an event, gain patterns have been reconstructed using data from selected stations of the International GNSS Service (IGS) in the period 2018-2019. Comparisons of gain patterns before and after April 4, 2019 exhibit differences in one of the regions of the antenna at the 1–2 dB level (95%). A further analysis of data also revealed the likely occurrence of a previous event in 2018. By using the multi-station approach, it was possible to spot the exact date of such an event, which resulted in changes on another antenna region at the 1 dB level (95%). A final examination using the multi-station approach reveals changes in the reconstructed gain pattern at the 1.4 dB level (95%) after the two mentioned events. These findings exhibit the importance of signal power monitoring systems that may be able to spot the presence of changes of a satellite antenna characteristic as well as to provide the ability of warning GNSS users of receive power-sensitive applications. Similarly, the analysis carried out in this study suggests that the employed multi station approach for satellite antenna gain pattern reconstruction may be suitable for setting up a (global) permanent multi constellation GNSS signal power monitoring system.

elib-URL des Eintrags:https://elib.dlr.de/186364/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Multi-station Analysis of Antenna Gain Patterns of GLONASS Satellites
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Allende-Alba, Gerardogerardo.allendealba (at) dlr.dehttps://orcid.org/0000-0003-1257-9454NICHT SPEZIFIZIERT
Thölert, SteffenSteffen.Thoelert (at) dlr.dehttps://orcid.org/0000-0003-4653-318XNICHT SPEZIFIZIERT
Steigenberger, PeterPeter.Steigenberger (at) dlr.dehttps://orcid.org/0000-0003-1905-6699146998482
Montenbruck, OliverOliver.Montenbruck (at) dlr.dehttps://orcid.org/0000-0003-4783-745XNICHT SPEZIFIZIERT
Datum:Februar 2022
Erschienen in:2022 International Technical Meeting of The Institute of Navigation, ITM 2022
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Nein
DOI:10.33012/2022.18244
ISSN:2330-3646
ISBN:978-093640630-5
Status:veröffentlicht
Stichwörter:Satellite Antenna Gain Pattern; GLONASS; Anomaly Detection
Veranstaltungstitel:International Technical Meeting 2022, Institute of Navigation
Veranstaltungsort:Long Beach, Kalifornien
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:25.-27. Jan. 2022
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 - GNSS Technologien und Dienste
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Navigation
Hinterlegt von: Allende Alba, Dr. Gerardo
Hinterlegt am:12 Mai 2022 13:34
Letzte Änderung:20 Nov 2023 09:19

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