Precise determination of mini railway track with ground based laser scanning

Meng, Xiaolin and Liu, Chun and Li, Nan and Joe, Ryding (2014) Precise determination of mini railway track with ground based laser scanning. Survey Review, 46 (336). pp. 213-218. ISSN 1752-2706

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Abstract

In order to determine the relative or absolute railway track and foundation deformation, ground-based laser scanning technology is utilised in this study to attain a precise 3D track reference. Located at the University of Nottingham’s Innovation Park, the newly built Nottingham Geospatial Building, where the Nottingham Geospatial Institute is based, has a roof laboratory that has unique testing facilities. This includes a mini railway track of 120m in length and other long-term monitoring monuments. A test was performed to precisely determine the ground-truth location of the railway track using a phase-based laser scanner for the formation of a standard reference. A real three dimensional mesh of the laser scanning data forms the basis for the line extraction. The compactly supported radial basis function (CS-RBF) was employed to determine the track features based on a 3D mesh approach. To verify the achievable accuracy of laser scanning technology, ground truth points measured with geodetic methods are compared with the extracted sample points and the results are presented in this paper.

Item Type: Article
Additional Information: Author's accepted manuscript has a different title from published version.
Keywords: Railway track, Ground based laser scanning, Collision modelling, Deformation of high speed railway
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering > Department of Civil Engineering
Identification Number: https://doi.org/10.1179/1752270613Y.0000000072
Depositing User: Meng, Xiaolin
Date Deposited: 25 Jul 2016 11:38
Last Modified: 13 Sep 2016 22:59
URI: http://eprints.nottingham.ac.uk/id/eprint/35394

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