Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1975-12-03
1976-10-05
Borchelt, Archie R.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250338, 250347, 356106R, G01B 902, G01N 2100
Patent
active
039846865
ABSTRACT:
A system for remotely measuring velocities present in discrete volumes of air in which a CO.sub.2 laser beam is focused by a telescope at such a volume, a focal volume, and within the focusable range, near field, of the telescope. The back scatter, or reflected light, principally from the focal volume, passes back through the telescope and is frequency compared with the original frequency of the laser, and the difference frequency or frequencies represent particle velocities in that focal volume.
REFERENCES:
patent: 3634682 (1972-01-01), Gold
patent: 3780293 (1973-12-01), Flint
patent: 3915572 (1975-10-01), Orloff
Bilbro James W.
Campbell, Jr. Ronald B.
Dahm Werner K.
Fletcher James C. Administrator of the National Aeronautics and Space
Huffaker Robert M.
Borchelt Archie R.
Manning John R.
Porter George J.
Wofford, Jr. L. D.
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