Development and operational testing of a sub-meter Positive Train Location system

Betts, Kevin; Mitchell, Troy J.; Reed, Donald L.; Sloat, Shon; Stranghoener, Douglas P.; Wetherbee, Jonathan D.

doi:10.1109/plans.2014.6851403

Cited by 4 publications

(4 citation statements)

References 1 publication

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“…GPS is intended to mitigate the significant cost of deployment of intrack transponders (balises) on railroads nationwide (Joint Council on Transit Wireless Communications 2012). The solution can be enhanced by track beacons or differential GPS stations hybridized with wheel sensors but [21] demonstrates the capability of low-cost on-board components to discriminate cross-track with data fusion without any trackside infrastructure. "To deploy the Nationwide Differential Global Positioning System (NDGPS) as a nationwide, uniform, and continuous positioning system, suitable for train control" is a goal for the federal Railroad Administration even if the dead line has been delayed this year.…”

Section: B Other Initiativesmentioning

confidence: 99%

A Survey of GNSS-Based Research and Developments for the European Railway Signaling

Marais

Beugin

Berbineau

2017

IEEE Trans. Intell. Transport. Syst.

109

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Railways have already introduced satellite-based localization systems for non-safety related applications. Driven by economic reasons, the use of these systems for new services and, in particular, their introduction in signaling system is seriously investigated today and tested all around the world. Because of the weight of their history, their strong normative context and the high requested level of safety, the introduction is relatively slow. The aim of this paper is to provide a survey of past and current programs dealing with GNSS (Global Navigation Satellite Systems) as a basis to introduce main issues relative to context, standards, performance requirements and safety proofs. Links with aeronautical concepts are also presented, illustrating the transposable principles and the limits due to the land transport environment.

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Section: B Other Initiativesmentioning

confidence: 99%

A Survey of GNSS-Based Research and Developments for the European Railway Signaling

Marais

Beugin

Berbineau

2017

IEEE Trans. Intell. Transport. Syst.

109

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“…Global Navigation Satellite Systems (GNSS), such as Global Positioning System (GPS), Global Navigation Satellite System (GLONASS), BeiDou Navigation Satellite System (BDS) and Galileo [1][2][3][4], and their augmentation systems [Differential Global Positioning System (DGPS), European Geostationary Navigation Overlay Service (EGNOS) and Wide Area Augmentation System (WAAS) [5][6][7][8]] are widely used in various branches of transport, including maritime, air and land, as well as rail transport [9][10][11][12]. There are three major areas in rail transport, in which satellite systems can be applied: passenger information, rail traffic management and rail traffic control [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Testing the Positioning Accuracy of GNSS Solutions during the Tramway Track Mobile Satellite Measurements in Diverse Urban Signal Reception Conditions

Specht

Wilk

et al. 2020

Energies

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Mobile Global Navigation Satellite System (GNSS) measurements carried out on the railway consist of using satellite navigation systems to determine the track geometry of a moving railway vehicle on a given route. Their purposes include diagnostics, stocktaking, and design work in railways. The greatest advantage of this method is the ability to perform measurements in a unified and coherent spatial reference system, which effectively enables the combining of design and construction works, as well as their implementation by engineering teams of diverse specialties. In the article, we attempted to assess the impact of using three types of work mode for a GNSS geodetic network [Global Positioning System (GPS), GPS/Global Navigation Satellite System (GLONASS) and GPS/GLONASS/Galileo] on positioning availability at three accuracy levels: 1 cm, 3 cm and 10 cm. This paper presents a mathematical model that enables the calculation of positioning availability at these levels. This model was also applied to the results of the measurement campaign performed by five GNSS geodetic receivers, made by a leading company in the field. Measurements with simultaneous position recording and accuracy assessment were taken separately on the same route for three types of receiver settings: GPS, GPS/GLONASS and GPS/GLONASS/Galileo in an urban area typical of a medium-sized city. The study has shown that applying a two-system solution (GPS/GLONASS) considerably increases the availability of high-precision coordinates compared to a single-system solution (GPS), whereas the measurements with three systems (GPS/GLONASS/Galileo) negligibly increase the availability compared to a two-system solution (GPS/GLONASS).

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“…There is also the Positive Train Control (PTC) system in the USA, which has been used on most American railways since 2015. It employs the NAVSTAR GPS system in both its basic form and in the differential version [Betts et al 2014]. Currently, the Automated Train Management System (ATMS) is under construction in Australia; starting in 2020, it will enable train positioning with high reliability and accuracy [ACIL 2013].…”

Section: Introductionmentioning

confidence: 99%

Use of a Least Squares with Conditional Equations Method in Positioning a Tramway Track in the Gdansk Agglomeration

Czaplewski¹,

Specht²,

Dąbrowski³

et al. 2019

TransNav

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Satellite measurement techniques have been used for many years in different types of human activity, including work related to staking out and making use of rail infrastructure. First and foremost, satellite techniques are applied to determine the tramway track course and to analyse the changes of its position during its operation. This paper proposes using the least squares with conditional equations method, known in geodesy (LSce). When applied, this method will allow for improvement of the final determination accuracy. This paper presents a simplified solution to the LSce alignment problem. The simplification involves replacement of the parameter binding equations with equivalent observational equations with properly selected weights. The results obtained with such a solution were demonstrated with a randomly selected section of a tramway track in Gdańsk. The article presents the theoretical foundations of the test method, the experiment organisation and the results obtained with MathCad Prime 3.0 software. It also presents the outcome of a study associated with the execution of the project No POIR.04.01.01-00-0017/17 entitled "Developing an innovative method of precision determination of a rail vehicle trajectory" executed by a consortium of the

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Development and operational testing of a sub-meter Positive Train Location system

Cited by 4 publications

References 1 publication

A Survey of GNSS-Based Research and Developments for the European Railway Signaling

A Survey of GNSS-Based Research and Developments for the European Railway Signaling

Testing the Positioning Accuracy of GNSS Solutions during the Tramway Track Mobile Satellite Measurements in Diverse Urban Signal Reception Conditions

Use of a Least Squares with Conditional Equations Method in Positioning a Tramway Track in the Gdansk Agglomeration

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