Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-28311
Publication type: Conference paper
Type of review: Peer review (publication)
Title: Performance evaluation of the ionospheric threat mitigation strategies in dual-frequency multi-constellation GBAS
Authors: Caamano, Maria
Gerbeth, Daniel
Sato, Hiroatsu
Circiu, Mihaela-Simona
Felux, Michael
et. al: No
DOI: 10.1109/PLANS53410.2023.10140062
10.21256/zhaw-28311
Proceedings: 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS)
Conference details: IEEE/ION Position, Location and Navigation Symposium (PLANS), Monterey, USA, 24-27 April 2023
Issue Date: 2023
Publisher / Ed. Institution: IEEE
ISBN: 978-1-6654-1772-3
Language: English
Subjects: Dual-frequency multi-constellation GBAS; Ionospheric monitoring; Availability; Integrity; Anomalous ionospheric gradient
Subject (DDC): 629: Aeronautical, automotive engineering
Abstract: In this paper, we evaluate the performance of the dual-frequency airborne ionospheric gradient monitor proposed for dual-frequency multi-constellation (DFMC) Ground Based Augmentation Systems (GBAS) at different distances from the airport. We use two types of thresholds for this assessment: (i) a constant threshold derived from operational requirements, and (ii) a dynamic threshold that increases with the distance from the airport. Increasing the threshold allows more ionospheric error within the position solution, but also enables the use of the primary single-frequency modes without the need to switch to the ionosphere-free (Ifree) solution for a longer period, which generally degrades the performance because it combines the noise and multipath of two frequencies. Furthermore, we compare the performance of the two potential architectures for DFMC GBAS: (i) the so-called GAST F architecture, which is based on single-frequency 100 seconds smoothing, and (ii) the GAST X architecture, which is based on divergence-free (Dfree) smoothing with variable and potentially longer smoothing time constants. Results with both simulated and real data show that the use of a variable threshold significantly reduces the probability of excluding satellites and switching to the Ifree mode for both GAST F and X, thereby increasing the availability of GBAS.
URI: https://digitalcollection.zhaw.ch/handle/11475/28311
Fulltext version: Accepted version
License (according to publishing contract): Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Centre for Aviation (ZAV)
Appears in collections:Publikationen School of Engineering

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Caamano, M., Gerbeth, D., Sato, H., Circiu, M.-S., & Felux, M. (2023). Performance evaluation of the ionospheric threat mitigation strategies in dual-frequency multi-constellation GBAS. 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS). https://doi.org/10.1109/PLANS53410.2023.10140062
Caamano, M. et al. (2023) ‘Performance evaluation of the ionospheric threat mitigation strategies in dual-frequency multi-constellation GBAS’, in 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS). IEEE. Available at: https://doi.org/10.1109/PLANS53410.2023.10140062.
M. Caamano, D. Gerbeth, H. Sato, M.-S. Circiu, and M. Felux, “Performance evaluation of the ionospheric threat mitigation strategies in dual-frequency multi-constellation GBAS,” in 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS), 2023. doi: 10.1109/PLANS53410.2023.10140062.
CAAMANO, Maria, Daniel GERBETH, Hiroatsu SATO, Mihaela-Simona CIRCIU und Michael FELUX, 2023. Performance evaluation of the ionospheric threat mitigation strategies in dual-frequency multi-constellation GBAS. In: 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS). Conference paper. IEEE. 2023. ISBN 978-1-6654-1772-3
Caamano, Maria, Daniel Gerbeth, Hiroatsu Sato, Mihaela-Simona Circiu, and Michael Felux. 2023. “Performance Evaluation of the Ionospheric Threat Mitigation Strategies in Dual-Frequency Multi-Constellation GBAS.” Conference paper. In 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS). IEEE. https://doi.org/10.1109/PLANS53410.2023.10140062.
Caamano, Maria, et al. “Performance Evaluation of the Ionospheric Threat Mitigation Strategies in Dual-Frequency Multi-Constellation GBAS.” 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS), IEEE, 2023, https://doi.org/10.1109/PLANS53410.2023.10140062.


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