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In this paper, we propose a beam-space Sparse Spectral Fitting method (BMSpSF) for Directions-Of-Arrival (DOA) and power estimation. In order to reduce the computational complexity of sparsity methods and improve the selection of the regularization parameter, a beam-space technique is used to Sparse Spectral Fitting method. Firstly, we use the beamforming matrix to transfer element-space data to beam-space...
In this paper, we propose a robust sparse spectrum fitting method (RSpSF) for Directions-Of-Arrival (DOA) and power estimation in the presence of general form of modeling errors in the array manifold matrix. By exploiting the group sparsity between the power spectrum and the modeling errors, RSpSF formulates the estimator as a convex optimization program. Then, in order to reduce its computational...
Since beamspace MUSIC (BM-MUSIC) method cannot resolve coherent sources, and the use of spatial smoothing pre-process leads to array aperture loss and reduction in detectable source numbers, a new beamspace MUSIC (BMC-MUSIC) method is presented for non-circular sources to this end. The proposed method exploits the characteristics of non-circular sources to construct conjugate symmetric Toeplitz matrix...
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