Depolarization and Scattering of Electromagnetic Waves
Final rept. 17 May 1982-30 Jun 1986
NEBRASKA UNIV LINCOLN DEPT OF ELECTRICAL ENGINEERING
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The principal purpose of the research is to investigate radio wave scattering and depolarization by conducting objects of irregular shape. To test the programs and in order to develop better physical interpretations of the results, scatterers with simple shapes are considered first. Thus, the full wave solutions for scattering and depolarization are compared with known solutions to the problem. The second phase of this work is devoted to the problem of scattering and depolarization by irregularly shaped objects. Both one- and two- dimensional problems are considered. To account for medium losses the scatterer is characterized by a complex permittivity and permeability. Using the full wave approach it is not necessary to employ the approximate impedance boundary conditions. Special attention is given to determining the normalized co- polarized and cross-polarized backscatter cross section. The full wave solutions for the scattering cross sections are compared with the perturbational and physical optics solutions. Special attention is also given to the polarization dependence of the scattering cross sections.
- Radiofrequency Wave Propagation