CHEN Jin-li,WANG YA-peng,LI Jia-qiang,et al.Tensor Decomposition and K‑means Clustering Based Array Diagnosis for MIMO Radar in Impulsive Noise Environment[J].ACTA ELECTRONICA SINICA,2021,49(12):2315-2322.
CHEN Jin-li,WANG YA-peng,LI Jia-qiang,et al.Tensor Decomposition and K‑means Clustering Based Array Diagnosis for MIMO Radar in Impulsive Noise Environment[J].ACTA ELECTRONICA SINICA,2021,49(12):2315-2322. DOI: 10.12263/DZXB.20210347.
Tensor Decomposition and K‑means Clustering Based Array Diagnosis for MIMO Radar in Impulsive Noise Environment
The traditional array diagnosis methods for multiple-input multiple-output(MIMO) radar may fail in the presence of impulse noise. The traditional matched filter based on second-order statistics is modified to obtain a reliable performance in the non-Gaussian noise
and then the array diagnosis method based on tensor decomposition and K-means clustering is proposed. The coefficients of the matched filters are adjusted with the Gaussian kernel function values of the echo signal observed at each receive element
which makes the MIMO radar form a virtual array successfully in the presence of impulsive noise. To further utilize the inherent multidimensional structure of the matched filter output data of the damaged and normal antennas
a third-order parallel factor(PARAFAC) model of the virtual array covariance matrix is formulated. By exploiting the complex parallel factor analysis(COMFAC) algorithm on the third-order covariance tensor
the manifold matrices of the transmit and receive arrays are obtained. The similarity of manifold matrix data is measured using Euclidean distance
and the clustering centers of the two clusters corresponding to the normal and fault elements are determined. The abnormal cluster data is selected to diagnose the location of the fault elements in MIMO radar array. Numerical simulation results confirm the effectiveness of the proposed algorithm.
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