Accession Number : ADA316123

Title :   A Double-Sum Technique for Performing a Fourier Transformation on an Integrand Composed of Aliased Factors.

Descriptive Note : Rept. for 1 Jan-31 May 96,

Corporate Author : NAVAL SURFACE WARFARE CENTER DAHLGREN DIV SILVER SPRING MD

Personal Author(s) : Maidanik, G. ; Becker, K. J.

PDF Url : ADA316123

Report Date : 31 MAY 1996

Pagination or Media Count : 19

Abstract : Structural acoustics often utilizes Fourier transformation to either reveal a phenomenon that is more directly recognized in one domain than in its Fourier conjugate domain or to employ complementarity in order to decipher a phenomenon. In this paper, a novel computational technique is introduced. This technique advantageously performs this transformation in situations in which specific spatial scales govern aliased factors in the integrand of a Fourier transformation. The technique can factorially save computational steps over corresponding computations that employ discrete Fourier transform procedures.

Descriptors :   *FOURIER TRANSFORMATION, *ACOUSTIC WAVES, STRUCTURAL PROPERTIES, WAVE PROPAGATION, APPROXIMATION(MATHEMATICS), NUMERICAL INTEGRATION, FOURIER SERIES.

Subject Categories : Operations Research
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE