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DECOMPOSITION METHODS IN INVERSE OBSTACLE SCATTERING VIA NEWTON ITERATIONS

机译:通过牛顿迭代的逆障碍散射分解方法

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We describe a new method for solving the inverse scattering problem to determine the shape of a scatterer D from the far field pattern "oo for scattering of time-harmonic waves This method may be interpreted as a hybrid of the decomposition method due to Kirsch and Kress and regularized Newton iteration methods for solving the nonlinear ill-posed operator equation F(T) = "oo with the operator F mapping the boundary F of the scatterer D onto the far field The new method does not require a forward solver and its feasibility is demonstrated through a numerical example.
机译:我们描述了一种用于解决逆散射问题的新方法,以确定来自远场模式的散射体D的形状“OO用于时间谐波的散射该方法可以被解释为由于Kirsch和kress的分解方法的混合和正规化的牛顿迭代方法,用于求解非线性不良操作员公式f(t)=“与操作者f将散射器d的边界f映射到远场上的映射到远场不需要前进的求解器,其可行性是通过数值例子证明。

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