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|Title:||MUSIC electromagnetic imaging with enhanced resolution for small inclusions|
|Authors:||Chen, X. |
|Citation:||Chen, X., Zhong, Y. (2009). MUSIC electromagnetic imaging with enhanced resolution for small inclusions. Inverse Problems 25 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0266-5611/25/1/015008|
|Abstract:||This paper investigates the influence of the test dipole on the resolution of the multiple signal classification (MUSIC) imaging method applied to the electromagnetic inverse scattering problem of determining the locations of a collection of small objects embedded in a known background medium. Based on the analysis of the induced electric dipoles in eigenstates, an algorithm is proposed to determine the test dipole that generates a pseudo-spectrum with enhanced resolution. The amplitudes in three directions of the optimal test dipole are not necessarily in phase, i.e., the optimal test dipole may not correspond to a physical direction in the real three-dimensional space. In addition, the proposed test-dipole-searching algorithm is able to deal with some special scenarios, due to the shapes and materials of objects, to which the standard MUSIC does not apply. © 2009 IOP Publishing Ltd.|
|Source Title:||Inverse Problems|
|Appears in Collections:||Staff Publications|
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