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• W4386997059 startingPage "8048" @default.
• W4386997059 abstract "This paper investigates the direction of arrival (DOA) estimation of coherent signals with a moving coprime array (MCA). Spatial smoothing techniques are often used to deal with the covariance matrix of coherent signals, but they cannot be used in sparse arrays. Therefore, super-resolution algorithms such as multiple signal classification (MUSIC) cannot be applied in the DOA estimation of coherent signals in sparse arrays. In this study, we propose an enhanced spatial smoothing method specifically designed for MCA. Firstly, we combine the signals received by the MCA at different times, which can be regarded as a sparse array with a larger number of array sensors. Secondly, we describe how to compute the covariance matrix, derive the signal subspace by eigenvalue decomposition, and prove that the signal subspace is also equivalent to a received signal. Thirdly, we apply enhanced spatial smoothing to the signal subspace and construct a rank recovered covariance matrix. Finally, the DOA of coherent signals are well estimated by the MUSIC algorithm. The simulation results validate the improved performance of the proposed algorithm compared with traditional methods, particularly in scenarios with low signal-to-noise ratios." @default.
• W4386997059 created "2023-09-25" @default.
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• W4386997059 date "2023-09-23" @default.
• W4386997059 modified "2023-10-15" @default.
• W4386997059 title "An Enhanced Spatial Smoothing Technique of Coherent DOA Estimation with Moving Coprime Array" @default.
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• W4386997059 doi "https://doi.org/10.3390/s23198048" @default.
• W4386997059 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37836878" @default.
• W4386997059 hasPublicationYear "2023" @default.
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