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access icon free Spatially spread dipole/loop quint for vector-cross-product-based direction finding and polarisation estimation

© The Institution of Engineering and Technology
Received 16/05/2017, Accepted 25/01/2018, Revised 12/12/2017, Published 02/02/2018

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 Cramér–Rao bounds are derived and simulation results are provided, to demonstrate the performance of the proposed SS-quint array configuration.

Inspec keywords: radio direction-finding; electromagnetic wave polarisation; direction-of-arrival estimation

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

Subjects: Signal processing and detection; Radionavigation and direction finding

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