Accession Number:

AD0741776

Title:

The Numerical Solution of Low Frequency Scattering Problems

Descriptive Note:

Corporate Author:

MICHIGAN UNIV ANN ARBOR RADIATION LAB

Report Date:

1972-02-01

Pagination or Media Count:

111.0

Abstract:

The low frequency scattering of electromagnetic and acoustic waves by rotationally symmetric bodies is considered. By concentrating on certain quantities such as the normalised component of the induced electric and magnetic dipole moments, it is shown how the first one or two terms in the far zone scattered fields can be expressed in terms of quantities which are functions only of the geometry of the body. Each of these is the weighted integral of an elementary potential function which can be found by solving an integral equation. A computer program has been written to solve the appropriate equations by the moment method, and for calculating the dipole moments, the electrostatic capacity, and a further quantity related to the capacity. The program is described and related data are presented.

Subject Categories:

  • Acoustics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE