Caamano, Maria and Gerbeth, Daniel and Sato, Hiroatsu and Circiu, Mihaela-Simona and Felux, Michael (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 2023. IEEE. 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS), 24 - 27 April 2023, Monterey, USA. doi: 10.1109/PLANS53410.2023.10140062. ISBN 978-166541772-3. ISSN 2153-3598.
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Official URL: https://ieeexplore.ieee.org/abstract/document/10140062
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.
Item URL in elib: | https://elib.dlr.de/196350/ | ||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Other) | ||||||||||||||||||||||||
Title: | Performance Evaluation of the Ionospheric Threat Mitigation Strategies in Dual-Frequency Multi-Constellation GBAS | ||||||||||||||||||||||||
Authors: |
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Date: | 2023 | ||||||||||||||||||||||||
Journal or Publication Title: | 2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023 | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||
DOI: | 10.1109/PLANS53410.2023.10140062 | ||||||||||||||||||||||||
Publisher: | IEEE | ||||||||||||||||||||||||
ISSN: | 2153-3598 | ||||||||||||||||||||||||
ISBN: | 978-166541772-3 | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Dual-frequency multi-constellation GBAS, ionospheric monitoring, availability, integrity, anomalous ionospheric gradients | ||||||||||||||||||||||||
Event Title: | 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) | ||||||||||||||||||||||||
Event Location: | Monterey, USA | ||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||
Event Dates: | 24 - 27 April 2023 | ||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||||||||
HGF - Program Themes: | Air Transportation and Impact | ||||||||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||||||||
DLR - Program: | L AI - Air Transportation and Impact | ||||||||||||||||||||||||
DLR - Research theme (Project): | L - Air Transport Operations and Impact Assessment | ||||||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Communication and Navigation > Navigation | ||||||||||||||||||||||||
Deposited By: | Caamano Albuerne, Maria | ||||||||||||||||||||||||
Deposited On: | 02 Aug 2023 11:52 | ||||||||||||||||||||||||
Last Modified: | 02 Aug 2023 11:53 |
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