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Linear Array Antenna Diagnostics Through a MUSIC Algorithm
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DOI：10.1109/ACCESS.2019.2956680.png)
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Abstract
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The problem of detecting defective elements in antenna arrays from near-field measurements by a MUSIC method is addressed. It is shown that, owing to the rank deficiency of the involved correlation matrix, MUSIC is indeed no better than back-transformation or matrix methods. In order to restore MUSIC performance, a rank recovering procedure is required. Therefore, here, we introduce a rank recovering method which is properly tailored to address the pertinent near-field configuration. Numerical examples, obtained for 2D scalar cases and linear array antennas, show the effectiveness of the method.
Keywords:
Array diagnostics
inverse imaging
multiple signal classification (MUSIC)
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