The concept and performance of a new digital signal processor for noncontact, high-precision speed and distance measurement of rail-guided vehicles are presented. The measurement procedure is based on the estimation of the time-delay between two signals generated by two optical 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-loop and closed-loop correlation techniques and sophisticated digital signal postprocessing algorithm.
A signal processor for a noncontact speed measurement system
Ein Signalprozessor fuer ein beruehrungsloses Geschwindigkeitsmessverfahren
IEEE Transactions on Vehicular Technology ; T-33 , 1 ; 14-22
1984
9 Seiten, 12 Quellen
Aufsatz (Zeitschrift)
Englisch
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