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Network-based ionospheric gradient monitoring to support GBAS

Caamano, Maria and Juan, José Miguel and Felux, Michael and Gerbeth, Daniel and González-Casado, Guillermo and Sanz, Jaume (2021) Network-based ionospheric gradient monitoring to support GBAS. Navigation, Journal of the Institute of Navigation. Wiley. doi: 10.1002/navi.411. ISSN 0028-1522.

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Official URL: https://onlinelibrary.wiley.com/doi/full/10.1002/navi.411


Large ionospheric gradients acting between a Ground Based Augmentation System (GBAS) reference station and an aircraft on approach could lead to hazardous position errors if undetected. Current GBAS stations provide solutions against this threat that rely on the use of “worst‐case” conservative threat models, which could limit the availability of the system. This paper presents a methodology capable of detecting ionospheric gradients in real time and estimating the actual threat model parameters based on a network of dual‐frequency and multi‐constellation GNSS monitoring stations. First, we evaluate the performance of our algorithm with synthetic gradients that are simulated over the nominal measurements recorded by a reference network in Alaska. Afterwards, we also assess it with one real ionospheric gradient measured by the same network. Results with both simulated gradients and a real gradient show the potential to support GBAS by detecting and estimating these gradients instead of always using “worst‐case” models.

Item URL in elib:https://elib.dlr.de/139434/
Document Type:Article
Title:Network-based ionospheric gradient monitoring to support GBAS
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Caamano, MariaUNSPECIFIEDhttps://orcid.org/0000-0002-8630-3074UNSPECIFIED
Juan, José MiguelgAGE/UPC, Spainhttps://orcid.org/0000-0003-1126-2367UNSPECIFIED
Felux, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-8368-4422UNSPECIFIED
Gerbeth, DanielUNSPECIFIEDhttps://orcid.org/0000-0002-7495-7361133728725
González-Casado, GuillermogAGE/UPC, Spainhttps://orcid.org/0000-0001-6765-2407UNSPECIFIED
Sanz, JaumegAGE/UPC, Spainhttps://orcid.org/0000-0001-8880-7084UNSPECIFIED
Date:11 February 2021
Journal or Publication Title:Navigation, Journal of the Institute of Navigation
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:Ground Based Augmentation System (GBAS), Ionospheric gradients, Availability, Monitoring network
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 (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Caamano Albuerne, Maria
Deposited On:14 Dec 2020 14:08
Last Modified:25 Apr 2023 13:20

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