Focused laser Doppler velocimeter
- Jelalian, A. V.
- Oct 5, 1976.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Sonnenschein, C. M., Bilbro, J. W., Lawrence, T. R., Dahm, W. K., Campbell, R. B., Jr., Keene, W. H., Krause, M. C., Huffaker, R. M., and Jeffreys, H. B.
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
- A system for remotely measuring velocities present in discrete volumes of air is described. A CO2 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.
- Other Subject(s):
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19770003551.
Accession ID: 77N10493.
- No Copyright.
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