On point sources and near field measurements in inverse acoustic obstacle scattering
On point sources and near field measurements in inverse acoustic obstacle scattering
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发表时间：
2002
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通讯作者：
M. Orispää
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作者：
M. Orispää
本文研究了一个由点声源产生入射场，在近场区域进行测量的障碍物声散射逆问题。本文提出了三种解决由近场测量重建未知声软或声硬散射体支撑的方法。方法是对Kirsch分解和修正的Kirsch分解方法的改进。数值算例表明了该方法的实用性。
The dissertation considers an inverse acoustic obstacle scattering problem in which the incident field is generated by a point source and the measurements are made in the near field region. Three methods to solve the problem of reconstructing the support of an unknown sound-soft or sound-hard scatterer from the near field measurements are presented. Methods are modifications of Kirsch factorization and modified Kirsch factorization methods. Numerical examples are given to show the practicality of one of the methods.