NASA NTRS · 19710000119
Laser Doppler instrument measures fluid velocity without reference beam
Abstract
Fluid velocity is measured by focusing laser beam on moving fluid and measuring Doppler shift in frequency which results when radiation is scattered by particles either originally present or deliberately injected into moving fluid.
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Bourquin, K. R., Shigemoto, F. H.. 1971-05-01. Laser Doppler instrument measures fluid velocity without reference beam. https://ntrs.nasa.gov/citations/19710000119
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