Conversion Of Time-sampled Data Of Track Irregularity To Distancesampled
Data By Dynamic Programming Based Elastic Matching
Author(s)
A. Yoshimura, A. Furukawa & M. Kamiyama
Abstract
Conversion of time-sampled data of track
irregularity to distance-sampled data by
dynamic programming based elastic matching
A. Yoshimural, A. Furukawa2, M. Kamiyama2
Tokyo University of Technology, Japan.
a ail way Technical Research Institute, Japan.
Abstract
In this paper we give a method of conversion of a time-sampled data to
a distance-sampled data for a same one data of railway track irregularity.
On the railway this conversion is sometimes required. A waveform of a
time-sampled sequence will look like stretched and shortened, if viewed on
the distance-axis, relatively comparing with that of a distance-sampled sequence.
A correspondence between two waveforms takes a form of warped
mapping relation. An extent of such warping behavior depends on a variation
in a running velocity of the track recording car. The waveforms of these
two kinds of digital sequences originally should correspond with each other.
By applying a method of dynamic programming based elastic matching to
this problem a
Keywords
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