Accession Number : AD0785120

Title :   Space Time Integral Equation Approach for Targets with Edges.

Descriptive Note : Final rept. 19 Feb 73-17 Feb 74,

Corporate Author : SPERRY RESEARCH CENTER SUDBURY MASS

Personal Author(s) : Bennett,C. L. ; Menger,K. S. ; Hieronymus,R. ; DeLorenzo,J. ; Peterson,D.

Report Date : JUL 1974

Pagination or Media Count : 181

Abstract : The space-time integral equation approach is extended to the solution of the large body problem for bodies with edges. An improved technique is developed for computing the smoothed impulse response of targets with edges which allows a variable patch size and provides greater economy and efficiency of solution than previously possible. The impulse response augmentation technique is then used to produce the total impulse response and the frequency response over the entire spectrum. Results are obtained for a sphere-cap flat-end cylinder and a right-circular cylinder. The space-time integral equation approach is extended to the problem of scattering from open, thin surfaces. The E-field boundary condition is used to develop the space-time integral equation, which in turn is solved numerically by marching on in time. A solution technique is developed for the inverse scattering problem using a space-time integral equation approach. (Modified author abstract)

Descriptors :   *Electromagnetic scattering, Radar reflections, Radar signals, Integral equations, Radar targets, Edges, Geometric forms, Numerical analysis, Time domain

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE