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论文类型：期刊论文

发表时间：2018-07-01

发表刊物：IET SIGNAL PROCESSING

收录刊物：SCIE

卷号：12

期号：5

页面范围：636-642

ISSN号：1751-9675

关键字：radio direction-finding; direction-of-arrival estimation; electromagnetic wave polarisation; spatially spread dipole-loop quint; vector-cross-product-based direction finding; polarisation estimation; direction-of-arrival estimation; DOA estimation; spatially spread electromagnetic vector-sensor; Cramer-Rao bounds; SS-quint array configuration; flexible array configuration

摘要：We propose a spatially spread quint (SS-quint) of only dipoles or loops, for direction of arrival (DOA) and polarisation estimation. The proposed SS-quint is spatially centrosymmetric. Based on this centrosymmetry, the authors develop a computationally low-cost DOA and polarisation estimator via vector-cross-product. Compared with the spatially spread electromagnetic vector-sensor, the proposed SS-quint consists of only dipoles or loops, and thus, its components have more consistent responses. Compared with a previously proposed SS-quint configuration, which is required to be strictly uniformly L-shaped, the proposed SS-quint has a more flexible array configuration in the sense that it is not restricted to any particular shape. The Cramer-Rao bounds are derived and simulation results are provided, to demonstrate the performance of the proposed SS-quint array configuration.