Accession Number : ADD015086
Title : Turbulence Velocimetry Technique.
Descriptive Note : Patent, Filed 5 Jun 90, patented 16 Jul 91,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Goodman, Louis
Report Date : 16 Jul 1991
Pagination or Media Count : 6
Abstract : A technique for obtaining a class of beam pattern is described which results in eliminating the Doppler spread effect of the mean transverse component of flow of scatterers. This is accomplished by weighting various array elements. This component of flow is typically the main contributor to Doppler frequency spread. With this component eliminated, the other contributor of Doppler spread is due to the turbulent or fluctuating scatterer motion on the scale of the scattering volume. This contributor is smaller of the two and is estimated by standard Doppler methods.
Descriptors : ARRAYS, DOPPLER EFFECT, DOPPLER SYSTEMS, FLOW, FREQUENCY, MEAN, PATTERNS, SCATTERING, STANDARDIZATION, TRANSVERSE, TURBULENCE, VELOCIMETERS, VOLUME
Subject Categories : Acoustic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE