Method and a device for measuring speed by the doppler effect
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United States of America Patent
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Feb 18, 2003
Issued Date -
N/A
app pub date -
Nov 26, 2001
filing date -
May 27, 1999
priority date (Note) -
Expired
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Abstract
A method and device for measuring the speed of at least one object by Doppler effect, whereby the light diffused by an object illuminated by a laser sheet is transmitted to a CCD video camera by spectral filtering means which are substantially tuned to the laser illumination frequency, means being provided to generate reference monochromatic luminous fluxes having frequencies which are different from the laser illumination frequency by fixed known amounts, and the reference luminous fluxes being transmitted to the CCD video camera.
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