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Polarimetric scattering from a layer of spatially oriented metamaterial small spheroids
Published online by Cambridge University Press: 27 April 2005
Abstract
Complex scattering amplitude functions of a small
metamaterial spheroid are derived. The Mueller matrix solution for
polarimetric bistatic scattering from a layer of random metamaterial small
spheroids is then constructed. Bistatic scattering of metamaterial and
dielectric spheroids are numerically calculated. Linearly co-polarized
backscattering coefficients $\sigma _{hh} $, $\sigma _{vv} $
and $\sigma
_{hh} -\sigma _{vv} $
are presented to show the dependence upon frequency.
The co-polarized and cross-polarized backscattering coefficients and
polarizability degree of a layer of non-uniformly oriented metamaterial
spheroids under illumination of an elliptic polarized plane wave are
numerically simulated. Effects of metamaterial parameters on scattering
pattern and scattering mechanism are interpreted. Numerical results indicate
that the bistatic scattering of metamaterial particles is enhanced largely
and demonstrates asymmetric directivity. Meanwhile, polarized difference of
$\sigma _{hh} -\sigma _{vv} $
strongly varies with frequency due to
constitutive dispersion of $\varepsilon (\omega )$
and $\mu (\omega )$
.
- Type
- Research Article
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- Copyright
- © EDP Sciences, 2005
References
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