Accession Number : AD0665401

Title :   SCATTERING BY PENETRABLE SPHEROIDS.

Descriptive Note : Technical rept.,

Corporate Author : SYLVANIA ELECTRONIC SYSTEMS-WEST MOUNTAIN VIEW CALIF ELECTRONIC DEFENSE LABS

Personal Author(s) : Burke,James E.

Report Date : FEB 1968

Pagination or Media Count : 24

Abstract : The exact spheroidal-function series solution for the scattering of a plane wave by a penetrable spheroid is used to obtain explicit low-frequency (long-wavelength) approximations in ascending powers of k = 2 pi/lambda where lambda is the wavelength. The farfield scattering amplitude is given to the sixth power of k, and the fields near and inside the spheroid are given to the second and first power, respectively. The results are valid for prolate and oblate spheroids and arbitrary angles of incidence and observation. (Author)

Descriptors :   (*ACOUSTIC SIGNALS, SCATTERING), ELLIPSOIDS, NUMERICAL ANALYSIS, APPROXIMATION(MATHEMATICS), PERIODIC VARIATIONS, SPECIAL FUNCTIONS(MATHEMATICAL)

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE