Velocity measuring system

Details Velocity measuring system Velocity measuring system

1978-10-18

1980-01-01

Buczinski, S. C.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

180178, 324175, 343 8, 356 285, G01P 336

Patent

active

041814320

ABSTRACT:
In order to provide a system for measuring relative velocity of a surface with the accuracy of a laser velocimeter but avoiding the problems associated with operating down to zero speed and with signal dropout during a run, a tachometer is coupled to measure the relative velocity and the output of the tachometer corrected using the output of the laser velocimeter thereby giving laser velocimeter accuracy over the major portion of the velocity range but still permitting operation down to zero speed and operation when signal dropout occurs.

REFERENCES:
patent: 3123823 (1964-03-01), Schreitmueller
patent: 3344632 (1967-10-01), Phillipson
patent: 3689882 (1972-09-01), Dessailly
patent: 3921749 (1975-11-01), Kawada

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