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In a previous paper, the authors presented a dual space methodfor the numerical solution of the two-dimensional inverse scatteringproblem for acoustic waves in an inhomogeneous medium. Here,by making major modifications to the dual space method, a dramaticimprovement in the numerical performance of this method is achievedfor solving the inverse scattering problem. 相似文献
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Uniqueness theorems are obtained for the problem of determiningthe shape of a sound-soft or sound-hard obstacle from a knowledgeof (1) the far-field pattern at a fixed value of the wave numberand a finite number of distinct incident fields, or (2) thetotal scattering cross section for an interval of wave numbersand the incident field propagating in an arbitrary direction. 相似文献
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In this paper, the authors describe a new algorithm for solvingthe inverse scattering problem of determining the speed of soundin an inhomogeneous medium from far-field data. Limited testinghas shown that the algorithm has some capacity for reconstructingsimple sound profiles using data over a limited range of frequencies. 相似文献
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