Accession Number : ADA130533

Title :   Parametric Acoustic Array Formation Via Weak Collinear and Noncollinear INteraction in Diepersive Fluids.

Descriptive Note : Technical rept.,

Corporate Author : TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS

Personal Author(s) : Hamilton,Mark F

PDF Url : ADA130533

Report Date : Jun 1983

Pagination or Media Count : 247

Abstract : The effect of dispersion on parametric arrays formed by Gaussian beams is investigated via solutions of the nonlinear paraxial wave equation. Analytical solutions are obtained by employing the quasilinear approximation; the results are thus restricted to weakly nonlinear interactions. Both (i) collinear and (ii) noncollinear interactions of the primary beams are considered. (i) Axial field curves and farfield directivity patterns are presented for the difference-frequency signal resulting from collinear interaction of Gaussian beams.

Descriptors :   *Acoustic arrays, *Interactions, *Fluids, *Dispersions, Diffraction, Phased arrays, Wave equations, Approximation(Mathematics), Dissipation, Beams(Radiation), Curves(Geometry), Frequency, Gaussian quadrature, Nonlinear systems, Parameters

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE