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Impact of Unknown Digital Map Errors on Satellite-based Navigation in Railway

Grosch, Anja and Garcia Crespillo, Omar (2020) Impact of Unknown Digital Map Errors on Satellite-based Navigation in Railway. In: 2020 European Navigation Conference, ENC 2020. European Navigation Conference 2020 (ENC 2020), 2020-11-23 - 2020-11-24, Virtual. doi: 10.23919/ENC48637.2020.9317448. ISBN 978-394497627-3.

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Satellite navigation is considered one of the key technologies for future train control and railway signalling. Since Global Navigation Satellite System (GNSS) does not provide a location solution directly on the track domain, the use of a precise railway track map is essential to be integrated with GNSS. However, most current localization solutions assume that the track map, which relates the geographical position of the track with its unique location in the railway network, is perfectly known without any error. In this paper, we investigate and discuss the impact that digital track map errors can have on track-constrained GNSS positioning. First, we derive the mathematical basis that accounts for the propagation of map errors to the position solution. Then, we present the impact on the detection capability of pseudorange faults if these map errors are not known or ignored. The analysis show the importance of accounting properly for these errors to guarantee certain requirement levels.

Item URL in elib:https://elib.dlr.de/139381/
Document Type:Conference or Workshop Item (Speech)
Title:Impact of Unknown Digital Map Errors on Satellite-based Navigation in Railway
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Grosch, AnjaUNSPECIFIEDhttps://orcid.org/0000-0001-9025-8723UNSPECIFIED
Garcia Crespillo, OmarUNSPECIFIEDhttps://orcid.org/0000-0002-2598-7636UNSPECIFIED
Date:23 November 2020
Journal or Publication Title:2020 European Navigation Conference, ENC 2020
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:Digital Track Map, Train, GNSS, Fault Detection, Integrity
Event Title:European Navigation Conference 2020 (ENC 2020)
Event Location:Virtual
Event Type:international Conference
Event Start Date:23 November 2020
Event End Date:24 November 2020
Organizer:DGON e.V.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Project Navigation 4.0 (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Garcia Crespillo, Omar
Deposited On:08 Dec 2020 17:46
Last Modified:24 Apr 2024 20:40

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