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A signal processor for a non-contact speed measurement system

Authors:: Bohmann, J. , Meyr, H. , Peters, R. , Spies, G.
Journal:: IEEE Trans. Vehicular Technology
Volume:: VT-33
Page(s):: 14-22
number:: 1
Date:: Feb. 1984
Language:: English
Abstract:: The concept and performance of a new digital signal processor for noncontact, high precision speed and distance meas- urement of rail-guided vehicles are presented. The measurement procedure is based on the estimation of the time-delay between two signals generated by two optimal sensors located a distance L apart. Due to surface irregularities these signals are random, but nearly identical except for a time delay corresponding to the velocity of the vehicle. The high precision and good dynamical properties of the measuring device are achieved by applying a combination of open- and closed loop correlation techniques and sophisticated digital signal postprocessing algorithms.
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