Time of flight velocimeter

Details Time of flight velocimeter Time of flight velocimeter

1988-06-30

1991-02-05

Tarcza, Thomas H.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

7386106, G01P 336

Patent

active

049899694

ABSTRACT:
A time of flight velocimeter wherein a radiation source projects two parallel beams into an air mass. Each of the parallel beams converges into a waist portion. As an aerosol particle moves through the waist portion, part of the radiation of each of the beams is backscattered. This backscattered radiation is focused onto two detectors, one for each beam. Signals from the detectors, generated in response to the backscattered radiation, are processed to determine the velocity of the particle which has passed through the waist portion of the two beams.

REFERENCES:
patent: 3941477 (1976-03-01), Schodl
patent: 4162509 (1979-07-01), Robertson
patent: 4506979 (1985-03-01), Rogers
patent: 4696567 (1987-09-01), Ruger et al.
patent: 4707130 (1987-11-01), Hofmann et al.
patent: 4804263 (1989-02-01), Schodl
patent: 4859055 (1989-08-01), Gal et al.
"Laser Dual Focus Velocimeter", Polytec Optronics, Inc., Merrik, N.Y. undated.
"Final Report Real-Time Remote Measurement of Wind Speed by Laser Backscattered Single Particle Correlation Techniques", by C. She, Oct. 1977.
Mayo et al, "Laser Transit Anemometer with Microcomputer and Special Digital Electronics: Measurements in Supersonic Flows," ICIASF'79 Record, 24-26 Sep.'79, pp. 146-153.

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