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- W4384338363 abstract "The direction-of-arrival (DOA) estimation of wideband signals, based on sparse signal reconstruction, has recently been proposed, owing to its unique high-resolution performance. As a typical tool of sparse signal reconstruction, sparse Bayesian learning (SBL) enhances little sparsity in most works, leading to a non-robust local fitting. To significantly enhance sparsity, we proposed a novel hierarchical Bayesian prior framework, and deduced a novel iterative approach. It was discovered that the iterative approach had a lower computational complexity than the majority of current state-of-the-art algorithms. Besides, the proposed approach achieves a high angular estimation accuracy and sparsity performance, by utilizing the joint sparsity of the multiple measurement vector (MMV) models. Moreover, the approach stabilizes the estimated values between different frequencies or snapshots, so as to obtain a flat spatial spectrum. Extensive simulation results are presented, to demonstrate the superior performance of our method." @default.
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- W4384338363 date "2023-07-14" @default.
- W4384338363 modified "2023-09-28" @default.
- W4384338363 title "Wideband DOA Estimation Utilizing a Hierarchical Prior Based on Variational Bayesian Inference" @default.
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- W4384338363 doi "https://doi.org/10.3390/electronics12143074" @default.
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