Velocity measurement of diffuse objects by using speckle dynamics

Shinichi Komatsu, Ichirou Yamaguchi, Hiroyoshi Saito

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


A new method of velocity measurement using dynamic properties of speckles produced at the gaussian image plane of a moving diffuse object is discussed theoretically and experimentally. The relation between the principles of this method and a laser Doppler velocimeter is made clear. It is shown that these two methods utilize different kinds of light intensity fluctuations and have complementary conditions for effective measurement. Experimental verification and application of the present method for the visualization of velocity distribution are also given.

Original languageEnglish
Pages (from-to)1715-1724
Number of pages10
JournalJapanese Journal of Applied Physics
Issue number9
Publication statusPublished - 1976
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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