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Geodetic Altitude From Barometer and Weather Data for GNSS Integrity Monitoring in Aviation

Simonetti, Maximilian and Garcia Crespillo, Omar (2024) Geodetic Altitude From Barometer and Weather Data for GNSS Integrity Monitoring in Aviation. Navigation, Journal of the Institute of Navigation, 71 (2). The Institute of Navigation Inc. doi: 10.33012/navi.637. ISSN 2161-4296.

[img] PDF - Only accessible within DLR - Preprint version (submitted draft)
[img] PDF - Postprint version (accepted manuscript)

Official URL: https://navi.ion.org/content/71/2/navi.637


Vertical navigation is crucial for safe aircraft separation and has been traditionally based on the pressure altitude provided by barometric altimeters. New aviation oper- ations require robust determination of geodetic altitude and are expected to primarily rely on global navigation satellite systems (GNSS). Since deviations between pressure and geodetic altitudes can reach hundreds of meters, an altitude harmonization is needed to use barometers in combination with GNSS. In this paper, we first present a methodology to compute accurate geodetic altitude from barometers and external weather data. Secondly, we derive error and threat models of this geodetic altitude. Finally, we employ these models within a GNSS integrity monitoring algorithm augmented with the derived altitude. We assess our methodologies against flight tests measurements and availability simulations of localizer performance with vertical guidance (LPV) operations. These analyses illustrate the potential benefits of employing barometers as augmentation or stand–alone systems for geodetic altitude navigation.

Item URL in elib:https://elib.dlr.de/202304/
Document Type:Article
Title:Geodetic Altitude From Barometer and Weather Data for GNSS Integrity Monitoring in Aviation
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Simonetti, MaximilianUNSPECIFIEDhttps://orcid.org/0000-0002-7949-6867UNSPECIFIED
Garcia Crespillo, OmarUNSPECIFIEDhttps://orcid.org/0000-0002-2598-7636UNSPECIFIED
Date:June 2024
Journal or Publication Title:Navigation, Journal of the Institute of Navigation
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Publisher:The Institute of Navigation Inc
Keywords:vertical navigation, pressure altitude, ARAIM, integrated navigation, ABAS, ERA5, LPV-200
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - GNSS Technologies and Services, L - Cyber-Security Centric Communication, Navigation and Surveillance
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Garcia Crespillo, Omar
Deposited On:25 Jan 2024 16:25
Last Modified:22 Mar 2024 15:27

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