Abstract
A technique is presented which uses a laser beam to measure both vector components of the transverse velocity of a diffuse target. It is shown that the derivative of the spatio-temporal cross-correlation function of laser speckle intensity fluctuations, taken with respect to the time delay and evaluated at zero time delay, is directly proportional to the component of target velocitythat is parallel to the spatial separation. Experimental results are presented which verify this linearity.
© 1981 Optical Society of America
Full Article | PDF ArticleMore Like This
J. H. Churnside and H. T. Yura
Appl. Opt. 21(5) 845-850 (1982)
Zhan Yu, Jin Guo, Lisheng Liu, Tingfeng Wang, and Yuanyang Li
Appl. Opt. 58(12) 3310-3316 (2019)
Petr Šmíd, Pavel Horváth, and Miroslav Hrabovský
Appl. Opt. 46(18) 3709-3715 (2007)