Accession Number : ADA286438


Title :   Inverse and Control Problems in Electromagnetics


Descriptive Note : Final rept. 1 Jul 1991-30 Jun 1994


Corporate Author : DELAWARE UNIV NEWARK DEPT OF MATHEMATICAL SCIENCES


Personal Author(s) : Kleinman, Ralph E ; Angell, Thomas S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a286438.pdf


Report Date : 14 Oct 1994


Pagination or Media Count : 236


Abstract : This report summaries work carried out in a number of specific areas of investigation in inverse scattering and optimal control problems in electromagnetics. The progress is briefly described and detailed result's are included in an appendix. The major accomplishments include: the application of multi-criteria optimization techniques to problems in antenna design; the development of inverse scattering algorithms which use scattered field data in the frequency domain to reconstruct the shape, location and constitutive parameters of a scattering object; establishing the well-posedness of electromagnetic scattering problems with resistive or conductive boundary conditions; and derivation of new boundary integral equations for electromagnetic scattering from local distributions of a plane screen. In addition some new results on low frequency scattering have been found which establish the exact nature of the asymptotic expansion in two dimensions. Antenna design, Multicriteria optimization, Inverse scattering, Low frequency scattering, Integral equations.


Descriptors :   *ACOUSTIC WAVES , *ELECTROMAGNETIC SCATTERING , *ANTENNAS , *INVERSE SCATTERING , *ANTENNA RADIATION PATTERNS , *RADIO WAVES , ALGORITHMS , SCATTERING , OPTIMIZATION , BOUNDARIES , WAVE PROPAGATION , ASYMPTOTIC SERIES , TOMOGRAPHY , MAXWELLS EQUATIONS , INTEGRAL EQUATIONS , FREQUENCY DOMAIN , LOW FREQUENCY , HYDROMECHANICS


Subject Categories : Electrical and Electronic Equipment
      Radiofrequency Wave Propagation


Distribution Statement : APPROVED FOR PUBLIC RELEASE