Near-field-based array failure diagnosis using sparse source reconstruction

Sparse source reconstruction is an effective method to find the radiation source from the near field scanning. Therefore, it is attractive to use sparse source reconstruction to locate failing elements in a failing array. This paper presents recent advances of sparse source reconstruction for near-field-based array diagnosis. First, fundamental formulation of near-field-based array diagnosis using sparse source reconstruction is presented. Second, two methods of modeling the mutual coupling effect are introduced. Finally, simulation results are presented to show the advantages of sparse source reconstruction and the accuracy improvement by considering the mutual coupling effect.

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