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Improved Ionospheric Monitoring for Future Dual-Frequency GBAS

Felux, Michael and Caamano Albuerne, Maria and Circiu, Mihaela-Simona and Gerbeth, Daniel (2019) Improved Ionospheric Monitoring for Future Dual-Frequency GBAS. In: Proceedings of the ISGNSS 2019. ISGNSS 2019, 29. Okt. - 01. Nov. 2019, Jeju, Südkorea.

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Abstract

As of today, all Ground Based Augmentation Systems operate using only the navigation signals from GPS (and Glonass for a number of stations in Russia) in the L1 band. Ionospheric activity, especially in equatorial and polar regions, limits the availability of the service in those regions. Therefore, an extension to dual-frequency and multi-constellation (DFMC) techniques is currently being developed. In previous work we presented an initial concept for ionospheric monitoring and preliminary evaluations using the L1/L2 frequency combination of GPS. In this paper we present an analysis of the monitoring threshold depending on the number of satellites and constellations used. Furthermore, we discuss the potential issue of multiple satellites being affected by a gradient simultaneously which causes the monitoring to become quite sensitive in the original monitoring concept. Next, we consider the impact of ground and airborne noise and multipath on the monitoring performance using latest results of the effort of developing the respective models. Finally, we show the performance of the monitor in real-world operations using flight test data from flight trials with our Airbus A320 and our experimental dual-frequency multi-constellation GBAS ground station with the currently available Galileo satellites broadcasting signals on E1 and E5a and the GPS Block IIF satellites that broadcast signals on L1 and L5.

Item URL in elib:https://elib.dlr.de/130212/
Document Type:Conference or Workshop Item (Speech)
Title:Improved Ionospheric Monitoring for Future Dual-Frequency GBAS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Felux, MichaelMichael.Felux (at) dlr.dehttps://orcid.org/0000-0002-8368-4422
Caamano Albuerne, MariaMaria.CaamanoAlbuerne (at) dlr.deUNSPECIFIED
Circiu, Mihaela-SimonaMihaela-Simona.Circiu (at) dlr.dehttps://orcid.org/0000-0003-4430-0526
Gerbeth, DanielDaniel.Gerbeth (at) dlr.dehttps://orcid.org/0000-0002-7495-7361
Date:November 2019
Journal or Publication Title:Proceedings of the ISGNSS 2019
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:GBAS, DFMC, Dual-Frequency, Ionosphere
Event Title:ISGNSS 2019
Event Location:Jeju, Südkorea
Event Type:international Conference
Event Dates:29. Okt. - 01. Nov. 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Communication, Navigation and Surveillance
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Felux, Michael
Deposited On:21 Nov 2019 13:54
Last Modified:21 Nov 2019 13:54

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