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   Articles with "direction finding" as a keyword



Subspace-Based Method for Direction Finding of Multiple Partially Polarized Signals

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recommendations! Published in 2018 at "Chinese Journal of Electronics"

DOI: 10.1049/cje.2017.11.011

Abstract: We investigate the problem of direction finding for multiple Partially polarized (PP) electromagnetic signals, each of which possesses two spatial degrees of freedom. We use a uniform linear array of L sensors, where each consists… read more here.

Keywords: direction finding; partially polarized; direction; subspace based ... See more keywords

Direction finding based on TMAs with reconfigurable angle-searching range and bearing accuracy

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recommendations! Published in 2017 at "Electronics Letters"

DOI: 10.1049/el.2016.3932

Abstract: A direction-finding technique based on time-modulated arrays (TMAs) is presented. Signals radiated/received by the TMAs with moving phase centre suffer from the Doppler effect and the shifted frequency is direction-dependent. This interesting property allows TMAs… read more here.

Keywords: direction finding; range bearing; direction; reconfigurable angle ... See more keywords

Direction finding by learning-assisted programmable metasurface

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recommendations! Published in 2025 at "Journal of Applied Physics"

DOI: 10.1063/5.0278818

Abstract: This study explores the assistance of supervised machine learning to a programmable metasurface for precise direction finding. The programmable metasurface plays the role of an electronic-scanning reflector to scan the azimuth plane and redirect incident… read more here.

Keywords: direction finding; finding learning; learning assisted; programmable metasurface ... See more keywords

Approximate Closed-Form TDOA-Based Estimator for Acoustic Direction Finding via Constrained Optimization

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recommendations! Published in 2018 at "IEEE Sensors Journal"

DOI: 10.1109/jsen.2018.2803150

Abstract: This paper focuses on estimating the azimuth and elevation of a sound emitter in 3-D space based on time-difference-of-arrival (TDOA) measurements with an array of acoustic sensors. The TDOA-based direction finding problem is significant because… read more here.

Keywords: direction finding; direction; estimator; tdoa based ... See more keywords

Direction Finding in the Presence of Direction-Dependent Mutual Coupling

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recommendations! Published in 2017 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2017.2647983

Abstract: Direction-of-arrival (DOA) estimation in the presence of mutual coupling (MC) is an important problem in direction-finding applications. Previous methods in the literature assume that the MC in the array is modeled with a single direction-independent… read more here.

Keywords: direction finding; direction; mutual coupling; direction dependent ... See more keywords

Spatial Spectrum Direction Finding by Programmable Metasurface With Time Modulation

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recommendations! Published in 2024 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2023.3311425

Abstract: A novel direction-finding method based on programmable metasurface and time modulation theory is proposed and verified. Its principle is as follows. First, period phase modulation is added to all elements in the metasurface, and the… read more here.

Keywords: direction; direction finding; metasurface time; modulation ... See more keywords

Conical Direction Finding using Frequency-Scanned Bull's-Eye Leaky-Wave Antennas for UAV Tracking Applications

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recommendations! Published in 2025 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2025.3608278

Abstract: We demonstrate the application of a bull’s-eye (BE) leaky-wave antennas (LWA) for enhanced conical direction finding, leveraging its inherent conical-beam frequency-scanning capability. Unlike uniform or quasi-uniform 2-D LWAs, such as Fabry–Perot antennas, the 2-D periodic… read more here.

Keywords: direction; direction finding; conical direction; bull eye ... See more keywords

Difference Coarray-Based Direction Finding via Covariance Fitting

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recommendations! Published in 2021 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2021.3078877

Abstract: Sparse linear arrays like nested arrays and coprime arrays, can offer more accurate direction-of-arrival estimation than uniform linear arrays by exploiting their difference coarrays. In this letter, we present a new algorithm for direction finding… read more here.

Keywords: covariance; difference coarray; direction finding; direction ... See more keywords

Azimuth-Elevation Direction Finding With a Pair of Acoustic Vector Sensors in the Presence of a Reflecting Boundary

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recommendations! Published in 2022 at "IEEE Signal Processing Letters"

DOI: 10.1109/lsp.2022.3215063

Abstract: This paper is aiming at addressing an azimuth-elevation direction-finding algorithm using a pair of identically oriented acoustic vector sensors located near a reflecting boundary. Two fourth-order cumulant matrices related in terms of a translationally invariant… read more here.

Keywords: elevation direction; azimuth elevation; vector sensors; direction finding ... See more keywords

Noise Covariance Matrix Estimation in Block-Correlated Noise Field for Direction Finding

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recommendations! Published in 2025 at "IEEE Signal Processing Letters"

DOI: 10.1109/lsp.2025.3525898

Abstract: A noise covariance matrix estimation approach in unknown noise field for direction finding applicable for the practically important cases of nonuniform and block-diagonal sensor noise is proposed. It is based on an alternating procedure that… read more here.

Keywords: noise covariance; noise field; matrix estimation; direction finding ... See more keywords
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An L-Shaped Array With Nonorthogonal Axes—Its Cramér–Rao Bound for Direction Finding

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recommendations! Published in 2018 at "IEEE Transactions on Aerospace and Electronic Systems"

DOI: 10.1109/taes.2017.2741298

Abstract: If a nominally L-shaped sensor-array's two legs are not exactly perpendicular, its azimuth-polar direction-of-arrival estimation would be degraded. This paper quantifies this degradation via a deterministic Cramér–Rao bound analysis of the direction-finding error variance. read more here.

Keywords: direction finding; direction; cram rao; rao bound ... See more keywords