Accession Number : ADA267402


Title :   Mathematics: Numerical Solution of Inverse Problems in Acoustics


Descriptive Note : Final rept. 1 May 90-30 Apr 92,


Corporate Author : CAMERINO UNIV (ITALY) DEPT OF MATHEMATICS AND PHYSICS


Personal Author(s) : Zirilli, Francesco


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267402.pdf


Report Date : 30 Apr 1992


Pagination or Media Count : 52


Abstract : A numerical algorithm for a three dimensional inverse acoustic scattering problem was considered. From the knowledge of several far field patterns of the Helmholtz equation a closed surface aD representing the boundary of an unknown obstacle D is reconstructed. The obstacle D is supposed to be hard (i.e. Neumann boundary condition) or characterized by an acoustic impedance (i. e. mixed boundary condition).


Descriptors :   *ALGORITHMS , *ACOUSTIC SCATTERING , FAR FIELD , SURFACES , BOUNDARIES , ACOUSTIC IMPEDANCE , THREE DIMENSIONAL , PATTERNS , ACOUSTICS


Subject Categories : Acoustics


Distribution Statement : APPROVED FOR PUBLIC RELEASE