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Through-wall electromagnetic scattering by N conducting cylinders.

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    Summary

    This study presents a spectral-domain analysis for scattering by conducting cylinders behind dielectric walls. The method accurately computes scattering for through-wall-imaging applications.

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    Area of Science:

    • Electromagnetics and Wave Propagation
    • Computational Physics

    Background:

    • Scattering analysis is crucial for applications like through-wall imaging.
    • Modeling electromagnetic wave interaction with dielectric interfaces and buried objects presents challenges.

    Purpose of the Study:

    • To develop a spectral-domain analysis for scattering by perfectly conducting cylindrical objects behind a dielectric wall.
    • To provide an accurate computational model for through-wall imaging scenarios.

    Main Methods:

    • An analytical-numerical technique based on the cylindrical wave approach was employed.
    • Cylindrical functions and their spectral representations were used as basis functions for scattered fields.
    • The numerical solution was computed for both transverse electric (TE) and transverse magnetic (TM) polarizations, in near- and far-field zones.

    Main Results:

    • The model accurately computes direct scattering from conducting cylinders behind dielectric layers.
    • The analysis considers a stack of three dielectric media, with air and arbitrary permittivity scenarios.
    • The method is applicable to general scattering problems involving buried objects.

    Conclusions:

    • The developed spectral-domain analysis provides an accurate and versatile tool for scattering problems.
    • This method has direct utility in through-wall imaging and simulation of buried objects.