Accession Number : AD0768443

Title :   A Program Incorporating Diffraction for the Computation of Radar Cross Section,

Corporate Author : MICHIGAN UNIV ANN ARBOR RADIATION LAB

Personal Author(s) : Knott,Eugene F. ; Senior,Thomas B. A.

Report Date : JUN 1973

Pagination or Media Count : 53

Abstract : A computer program is described that calculates the radar backscattering behavior of metallic roll symmetric bodies having one or more ring discontinuities in surface slope. The field diffracted by each surface singularity is represented by a line integral of equivalent electric and magnetic currents. The scattered field can be expressed as an integral of the physical optics currents existing over all non-diffracting portions of the surface and the equivalent currents at the singularities. However, since the equivalent currents themselves contain a physical optics component, the original currents must be modified in order to remove it. The predictions of the computer program are compared with experimental data for cones and for a typical aerospace vehicle. Though the program is almost as efficient as one using physical optics alone, the results obtained are markedly superior. (Author)

Descriptors :   (*RADAR CROSS SECTIONS, *COMPUTER PROGRAMS), BACKSCATTERING, BODIES OF REVOLUTION, AEROSPACE CRAFT, DIFFRACTION

Subject Categories : Computer Programming and Software
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE