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In this paper,we propose a sparse Baysesian learning (SBL) based approach for the DOA estimation in the presence of coherent sources. First, the difference technique is used to enhance the input SNR. Then, we construct a virtual array manifold to eliminate the cross-term effect between each coherent group, after eigenvalue decomposition (EVD) of the difference covariance matrix, reduce the dimension...
Based on the structure and characteristics of the frequency-scan antenna, the near-field computational model is constructed. The array element's phases are presented firstly and the radiation power of each array element is speculated according to the antenna aperture distribution. On the basis of the phase and power, the equation of radiation fields of each array element is obtained. According to...
The present paper paid particular attention to the flow and heat transfer performance for an array of micro jets impinging upon the dimpled surface by means of CFD modeling. The modeling of a three-by-four jet array impinging upon the smooth, concave- and convex-dimpled surfaces was carried out based on the solution of the steady, incompressible and three-dimensional RANS and energy equations by employing...
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