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Performance Evaluation of the Ionospheric Threat Mitigation Strategies in Dual-Frequency Multi-Constellation GBAS

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), 2023-04-24 - 2023-04-27, 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/
Document Type:Conference or Workshop Item (Other)
Title:Performance Evaluation of the Ionospheric Threat Mitigation Strategies in Dual-Frequency Multi-Constellation GBAS
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Caamano, MariaUNSPECIFIEDhttps://orcid.org/0000-0002-8630-3074UNSPECIFIED
Gerbeth, DanielUNSPECIFIEDhttps://orcid.org/0000-0002-7495-7361139739601
Sato, HiroatsuUNSPECIFIEDhttps://orcid.org/0000-0002-5886-2768UNSPECIFIED
Circiu, Mihaela-SimonaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Felux, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-8368-4422UNSPECIFIED
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 Start Date:24 April 2023
Event End Date: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:24 Apr 2024 20:56

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