ELECTROMAGNETIC INVERSE SCATTERING THEORY,
SYRACUSE UNIV RESEARCH CORP N Y SPECIAL PROJECTS LAB
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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.
- Active and Passive Radar Detection and Equipment
- Radiofrequency Wave Propagation