The problem of formation is formulated and the calculation algorithm, of non-mirror component with scattering a plane wave on a plate with periodic impedance conditions, is given. The complex scattering could arise, including mirrored component, with the slanting falling of a wave on the flat plate without spatial curvature is shown. The results could be used in vessels design projection and sea constructions projection. The most important issue for them is noise protection.
$^1$Krylov State Research Centre
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