Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Transmission-grating velocimetric technique for common objects

Not Accessible

Your library or personal account may give you access

Abstract

An optical technique to detect the velocity of a moving object that has a brightness distribution is presented. We show theoretically and experimentally that the amplitude of the detected signal in transmission-grating velocimetry is proportional to the Fourier component of the object spectrum at the spatial frequency of the grating. This fact can be used advantageously to sense the velocities of moving objects of any shape in one pass through the detector’s field of view. Results of the application of this method to measure the velocities of some common outdoor moving objects are also presented.

© 1992 Optical Society of America

Full Article  |  PDF Article
More Like This
Generalized spatial filtering velocimetry and accelerometry for uniform and nonuniform objects

Stanley Pau and William J. Dallas
Appl. Opt. 48(24) 4713-4722 (2009)

Measurements of flow velocity in a microscopic region using a transmission grating: elimination of directional ambiguity

Yoshihisa Aizu, Tsuyoshi Ushizaka, and Toshimitsu Asakura
Appl. Opt. 24(5) 636-640 (1985)

Measurements of the velocity gradient in a microscopic region using a transmission grating

Yoshihisa Aizu, Tsuyoshi Ushizaka, and Toshimitsu Asakura
Appl. Opt. 24(5) 641-647 (1985)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (14)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved