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On the Potential of Multi-Mode Antennas for Direction-of-Arrival Estimation

Pöhlmann, Robert and Alkubti Almasri, Sami and Zhang, Siwei and Jost, Thomas and Dammann, Armin and Hoeher, Peter A. (2019) On the Potential of Multi-Mode Antennas for Direction-of-Arrival Estimation. IEEE Transactions on Antennas and Propagation, 67 (5), pp. 3374-3386. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TAP.2019.2899010 ISSN 0018-926X

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Abstract

A multi-mode antenna (MMA) can be an interesting alternative to a conventional phased antenna array for directionof-arrival (DoA) estimation. By MMA we mean a single physical radiator with multiple ports, which excite different characteristic modes. In contrast to phased arrays, a closed-form mathematical model of the antenna response, like a steering vector, is not straightforward to define for MMAs. Instead one has to rely on calibration measurement or electromagnetic field (EMF) simulation data, which is discrete. To perform DoA estimation, an array interpolation technique (AIT) and wavefield modeling (WM) are suggested as methods with inherent interpolation capabilities, fully taking antenna nonidealities like mutual coupling into account. We present a non-coherent DoA estimator for low-cost receivers and show how coherent DoA estimation and joint DoA and polarization estimation can be performed with MMAs. Utilizing these methods, we assess the DoA estimation performance of an MMA prototype in simulations for both 2D and 3D cases. The results show that WM outperforms AIT for high SNR. The coherent estimation is superior to non-coherent, especially in 3D, because non-coherent suffers from estimation ambiguities. In conclusion, DoA estimation with a single MMA is feasible and accurate.

Item URL in elib:https://elib.dlr.de/126206/
Document Type:Article
Title:On the Potential of Multi-Mode Antennas for Direction-of-Arrival Estimation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pöhlmann, Robertrobert.poehlmann (at) dlr.deUNSPECIFIED
Alkubti Almasri, SamiUniversity of Kiel, GermanyUNSPECIFIED
Zhang, Siweisiwei.zhang (at) dlr.deUNSPECIFIED
Jost, Thomasthomas.jost (at) dlr.deUNSPECIFIED
Dammann, ArminArmin.Dammann (at) DLR.deUNSPECIFIED
Hoeher, Peter A.University of Kiel, GermanyUNSPECIFIED
Date:May 2019
Journal or Publication Title:IEEE Transactions on Antennas and Propagation
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:67
DOI :10.1109/TAP.2019.2899010
Page Range:pp. 3374-3386
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0018-926X
Status:Published
Keywords:characteristic modes, wavefield modeling, manifold separation, array interpolation technique, RSS, angle-ofarrival
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben GNSS2/Neue Dienste und Produkte
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Institute of Communication and Navigation > Communications Systems
Deposited By: Pöhlmann, Robert
Deposited On:15 Feb 2019 16:19
Last Modified:31 Jul 2019 20:24

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