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Using the full wave approach, the single and double scattered electromagnetic fields from deterministic one-dimensional rough surfaces are computed.
A geometrical optics approximation is used to interpret the results of the double scattered fields for normal incidence near backscatter.
Full wave expressions for the single and double scattered far fields are given in terms of multidimensional integrals.
Applying the steepest descent approximation to the double scattered field expressions, the dimensions of the integrals are reduced from four to two in the case of one-dimensional rough surfaces.
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That is why in our paper, we proposed a procedure to separate the walls into facets and each facet double scattering contribution is computed individually.
While there is no direct relationship between these expressions, they correspond to two extreme cases of a double scattering channel with scatterers [4].
where the index d indicates the double scattering case.
In the double scattering case, the surface attenuation coefficient of each facet is considered.
In Figure 9(c), the absolute value of the reflectivity map of the double scattering effect is shown.
Secondly, the simulator computes the reflectivity map very fast although it takes into account the double scattering case.
In particular, an interesting case is the double scattering model [4] (of which the keyhole channel is a special case).
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com