title: Generalized spatial filtering velocimetry and accelerometry for uniform and nonuniform objects.
abstract: We present a technique to measure velocity, acceleration, and higher order derivatives of motion using periodic and nonperiodic spatial filters. The technique can be applied using a single detector or an array of detectors. In one configuration, the velocity distribution of an object such as a fluid can be measured by imaging the object onto an array of detectors. In another configuration, multiple projections of an object are used to reconstruct a cross-sectional velocity distribution using a tomography algorithm. The advantages and disadvantages of our technique applied to uniform and spatially varying motions are described.
authors.affiliation: College of Optical Sciences, University of Arizona, 1630 East University Boulevard, Tucson, Arizona 85721, USA. spau@optics.arizona.edu
authors.forename: Stanley
authors.initials: S
authors.lastname: Pau
authors.forename: William J
authors.initials: WJ
authors.lastname: Dallas