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IDENTIFICATION OF POINT-LIKE OBJECTS WITH MULTIFREQUENCY SPARSE DATA
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DOI：10.1137/20M1312551.png)
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摘要
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The inverse acoustic scattering of point objects using multifrequency sparse measurements is studied. The objects may be a sum of point sources or point-like scatterers. We show that the locations and scattering strengths of the point objects can be uniquely identified by the multifrequency near or far fields taken at sparse sensors. Based on the uniqueness analysis, some direct methods have also been proposed for reconstructing the locations and determining the scattering strengths. The numerical examples are conducted to show the validity and robustness of the proposed numerical methods.
Keyword:
inverse scattering
multifrequency
sparse data
uniqueness
sampling method
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