Space Time Integral Equation Approach for Targets with Edges.
Final rept. 19 Feb 73-17 Feb 74,
SPERRY RESEARCH CENTER SUDBURY MASS
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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
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