Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Patent
1982-05-03
1988-02-16
Buczinski, Stephen C.
Optics: measuring and testing
Velocity or velocity/height measuring
With light detector
356 285, G01C 336
Patent
active
047251360
ABSTRACT:
A method for measuring the velocity of a scatterer in a moving fluid by examining the spatial structure of the optical field on the detector of a Laser Doppler Velocimeter (LDV). The optical field after scattering from the laser beam is a traveling wave of a shape dependent on the detector optics alone. A pair of differential linear arrays are used to find the direction of velocity of the traveling wave and hence that of the scatterer. Furthermore, this method eliminates the Doppler pedestal which requires high pass filter in most of the conventional methods.
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Agrawal Yogi C.
McCullough James R.
Buczinski Stephen C.
Lall Prithvi C.
McGill Arthur A.
McGowan Michael J.
The United States of America as represented by the Secretary of
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