Title: Direction-of-arrival estimation for partially polarised signals with switch-based multi-polarised uniform linear array

Authors: Yujian Pan; Jingke Zhang; Zongfeng Qi

Addresses: State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System (CEMEE), Luoyang, China; School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, China ' State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System (CEMEE), Luoyang, China ' State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System (CEMEE), Luoyang, China

Abstract: In this paper, a new switch-based multi-polarised receiver architecture and two compatible Direction-of-Arrival (DOA) estimation algorithms are proposed for the partially polarised signals. In the receiver, each polarised element in an antenna is connected to a common Radio Frequency (RF) chain via a switch, which reduces the number of RF chains. For DOA estimation, an ESPRIT-based algorithm and a joint annihilation-based algorithm are proposed. The ESPRIT-based algorithm is based on summing the covariance matrices of different polarised outputs, and the joint annihilation-based algorithm is based on annihilating different polarised outputs by a common filter. Compared with other algorithms, the ESPRIT-based algorithm, which only takes about 91 us to perform one estimation, is more efficient and the joint annihilation-based algorithm, which can approach the Cramer-Rao Lower Bound (CRLB), is more accurate. It is also concluded that the tri-polarised Uniform Linear Array (ULA) can offer more accurate estimation than the dual-polarised ULA.

Keywords: direction-of-arrival estimation; ESPRIT; joint annihilation; multi-polarised array; partially polarised signal.

DOI: 10.1504/IJWMC.2022.127591

International Journal of Wireless and Mobile Computing, 2022 Vol.23 No.3/4, pp.272 - 280

Received: 15 Sep 2021
Accepted: 11 Apr 2022
Published online: 12 Dec 2022 *

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