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Onboard Train Localization with Track Signatures: Towards GNSS Redundancy

Heirich, Oliver and Siebler, Benjamin (2017) Onboard Train Localization with Track Signatures: Towards GNSS Redundancy. In: ION GNSS 2017. ION GNSS+ 2017, 25.-29. Sept. 2017, Portland OR, USA.

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Official URL: https://www.ion.org/gnss/

Abstract

Future railway applications, such as train-side collision avoidance, virtual coupling or autonomous train driving demand reliable and accurate train localization. We focus on exclusive onboard train localization without additional way-side infrastructure. Common approaches for onboard train localization are based on measurements of a global satellite navigation system (GNSS). Well-known methods for improved reliability and accuracy are the combination with inertial navigation systems (INS) or dead reckoning. However, these approaches show an unbounded growth of an error for longer GNSS outages. Reliable train localization requires a long-term stability with bounded errors in long tunnels, at underground stations or in long stretches of dense forests. This paper presents two methods as well as a new system concept for onboard train localization with GNSS redundancy and long-term stability. The first method is signature based train localization approach from independent IMU and magnetometer measurements. The second method introduces an independent speed estimation approach without a wheel speed sensor nor a GNSS. A track signature is considered here as a signal of a track feature which is sampled over the 1-D positions of a track. It is possible to estimate a location from a comparison of the latest measured signatures and reference signatures from a map. This paper contains further an analysis of the signatures on straight tracks, parallel tracks, a switch, and a curve. The used signatures comprise eight signatures from magnetic, curvatures, attitude and vibration. All signatures use recorded data from real train runs of a regional train.

Item URL in elib:https://elib.dlr.de/112282/
Document Type:Conference or Workshop Item (Speech)
Title:Onboard Train Localization with Track Signatures: Towards GNSS Redundancy
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heirich, Oliveroliver.heirich (at) dlr.dehttps://orcid.org/0000-0001-5191-5997
Siebler, Benjaminbenjamin.siebler (at) dlr.dehttps://orcid.org/0000-0002-1745-408X
Date:25 September 2017
Journal or Publication Title:ION GNSS 2017
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Railway Track, Signatures, Localization, Magnetic, Vibration
Event Title:ION GNSS+ 2017
Event Location:Portland OR, USA
Event Type:international Conference
Event Dates:25.-29. Sept. 2017
Organizer:The Institute of Navigation, Satellite Division
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Traffic Management (old)
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - TrackScan (old), V - Next Generation Train III (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Communications Systems
Deposited By: Heirich, Oliver
Deposited On:17 Oct 2017 09:19
Last Modified:31 Jul 2019 20:09

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