Accession Number : AD0711644

Title :   ELECTROMAGNETIC INVERSE SCATTERING THEORY,

Corporate Author : SYRACUSE UNIV RESEARCH CORP N Y SPECIAL PROJECTS LAB

Personal Author(s) : Bojarski,Norbert N.

Report Date : DEC 1968

Pagination or Media Count : 59

Abstract : An effective zero order scattering theory for perfect conductors, consistent with monostatic high range resolution radar concepts, is developed. With the aid of this theory, a basic Inverse Scattering Identity is then developed that states that the characteristic function (in three-dimensional space) of a scatterer is related to the field cross-section (in three-dimensional k-space) by a three-dimensional Fourier Transform. Uniqueness of the inverse for finite sized scatterers is established. A general inverse scattering solution is then developed that permits the determination of an appropriate maximum of information about a scatterer from incomplete scattering data. The specific solution for a finite three-dimensional aperture in the physical optics regime is then developed. The solutions developed in this report can thus be viewed as solutions to the frequency band limited and aspect angle limited short pulse synthetic aperture imaging (and associated data processing) problem; except that the solutions presented are based on rigorous electromagnetic scattering and inverse scattering theory applicable to spatially distributed scatterers, yielding Real Geometrical images; vis-a-vis the conventional heuristic approach based on radar and isolated point scatterers (scattering centers) concepts, yielding Radar images.

Descriptors :   (*ELECTROMAGNETIC FIELDS, SCATTERING), (*MONOSTATIC RADAR, RADAR IMAGES), PARTIAL DIFFERENTIAL EQUATIONS, INTEGRAL TRANSFORMS, ELECTROMAGNETIC PROPERTIES

Subject Categories : Active & Passive Radar Detection & Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE