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Applied Optics

Applied Optics


  • Vol. 19, Iss. 2 — Jan. 15, 1980
  • pp: 289–292

Laser Doppler velocimeter that selectively measures a specified velocity vector

Osami Sasaki, Takeo Abe, Tomio Shimizu, and Masaki Niwayama  »View Author Affiliations

Applied Optics, Vol. 19, Issue 2, pp. 289-292 (1980)

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A new laser Doppler velocimeter (LDV) where the waveform of Doppler signal changes according to the direction of the velocity vector is proposed. This feature makes it possible to measure selectively a specified velocity vector. A practical LDV system is constructed to be applied to the measurement of the falling velocity of raindrops. In this system the selection of a specified velocity vector is carried out by the detection of a difference between the two periods separated by one cycle of Doppler frequency in a Doppler burst. The experimental results show clearly the usefulness of this system.

© 1980 Optical Society of America

Original Manuscript: August 31, 1979
Published: January 15, 1980

Osami Sasaki, Takeo Abe, Tomio Shimizu, and Masaki Niwayama, "Laser Doppler velocimeter that selectively measures a specified velocity vector," Appl. Opt. 19, 289-292 (1980)

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  1. F. Durst, A. Melling, J. H. Whitelaw, Principles and Practice of Laser-Doppler Anemometry (Academic, New York, 1976).
  2. T-i. Wang, G. Lerfald, R. S. Lawrence, S. F. Clifford, Appl. Opt. 16, 2236 (1977). [CrossRef] [PubMed]
  3. S. Komatsu, A. Watabe, H. Saito, Oyo Butsuri 46, 879 (1977).
  4. T. Abe, O. Sasaki, J. Jpn. Soc. Snow Ice 40, 166 (1978). [CrossRef]

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