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   Articles with "sparse array" as a keyword



V-Shaped Sparse Arrays for 2-D DOA Estimation

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recommendations! Published in 2019 at "Circuits, Systems, and Signal Processing"

DOI: 10.1007/s00034-018-0991-5

Abstract: This paper proposes a new sparse array geometry for 2-D (azimuth and elevation) direction-of-arrival (DOA) estimation. The proposed array geometry is V-shaped sparse array, and it is composed of two linear portions which are crossing… read more here.

Keywords: sparse array; geometry; doa estimation; shaped sparse ... See more keywords

2D DOA estimation for noncircular sources using L-shaped sparse array

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recommendations! Published in 2018 at "Multidimensional Systems and Signal Processing"

DOI: 10.1007/s11045-016-0402-7

Abstract: We present an algorithm for two-dimensional (2D) direction-of-arrival (DOA) estimation of noncircular sources using an L-shaped sparse array. An L-shaped sparse array consisting of two co-prime arrays is firstly introduced. Then, the fourth-order-cumulants (FOCs) of… read more here.

Keywords: estimation; estimation noncircular; shaped sparse; sparse array ... See more keywords

Sparse Array Configuration Optimization Based on Target Priors in Distributed ISAR Imaging

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recommendations! Published in 2025 at "Electronics Letters"

DOI: 10.1049/ell2.70341

Abstract: This letter considers the sparse array configuration optimization problem for long‐range distributed inverse synthetic aperture radar (ISAR) imaging to suppress the strong grating lobes. Existing methods face two challenges: 1) The distributed ISAR model requires… read more here.

Keywords: configuration; distributed isar; configuration optimization; array configuration ... See more keywords

Sparse array radar forward-looking imaging based on fast atomic norm minimization

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recommendations! Published in 2023 at "Remote Sensing Letters"

DOI: 10.1080/2150704x.2023.2203338

Abstract: ABSTRACT The sparse array imaging radar could largely reduce the system complexity, but it also suffers from poor azimuthal resolution due to the limited aperture length and incomplete observation caused by non-uniform array configuration. In… read more here.

Keywords: sparse array; radar forward; method; forward looking ... See more keywords

Full-rank imaging detection of multi-frames of ultrasonic-guided waves in welded structural plate based on arc sparse array

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

DOI: 10.1088/1361-6463/ada9fd

Abstract: The utilization of ultrasonic-guided wave array imaging in the detection of weld structural plates holds significant importance. This study presents a novel approach for full-rank imaging of shear horizontal-guided wave arc sparse arrays in welding… read more here.

Keywords: arc sparse; ultrasonic guided; sparse array; imaging detection ... See more keywords

Curvature-Aware Sparse Array Synthesis for Edge-Aware UWB Localization in Multipath-Rich IoT Environments

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recommendations! Published in 2025 at "IEEE Internet of Things Journal"

DOI: 10.1109/jiot.2025.3629106

Abstract: Ultrawideband (UWB) technology is rapidly gaining adoption across Internet of Things (IoT) deployments such as warehouse automation and asset tracking, where Global Navigation Satellite System (GNSS) signals are often unavailable or unreliable. In such settings,… read more here.

Keywords: edge; multipath; sparse array; iot ... See more keywords

Sparse Array Design for Dual-Function Radar-Communications System

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recommendations! Published in 2023 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2023.3257739

Abstract: The problem of sparse array design for dual-function radar-communications is investigated. Our goal is to design a sparse array which can simultaneously shape desired beam responses and serve multiple downlink users with the required signal-to-interference-plus-noise… read more here.

Keywords: sparse array; array design; dual function; design ... See more keywords

Enhanced MISC-Based Sparse Array With High uDOFs and Low Mutual Coupling

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recommendations! Published in 2024 at "IEEE Transactions on Circuits and Systems II: Express Briefs"

DOI: 10.1109/tcsii.2023.3310512

Abstract: In this brief, inspired by the maximum inter-element spacing (IES) constraint (MISC) criterion, an enhanced MISC-based (EMISC) sparse array (SA) with high uniform degrees-of-freedom (uDOFs) and low mutual-coupling (MC) is proposed, analyzed and discussed in… read more here.

Keywords: array high; enhanced misc; sparse array; low mutual ... See more keywords

FPGA-Accelerated CNN Reconstruction for Low-Power Sparse-Array Ultrasound Imaging.

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recommendations! Published in 2025 at "IEEE transactions on ultrasonics, ferroelectrics, and frequency control"

DOI: 10.1109/tuffc.2025.3630483

Abstract: Imaging of targeted organs, such as the urinary bladder, could be transformative for preventive healthcare and early disease diagnosis when used to assess their real-time function. However, wearable and portable ultrasound (US) imaging systems often… read more here.

Keywords: reconstruction; array; low power; sparse array ... See more keywords

Sparse array performance in channels of limited coherence

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recommendations! Published in 2018 at "Journal of the Acoustical Society of America"

DOI: 10.1121/1.5035613

Abstract: Sparse arrays reduce the number of redundant measurements for lags on an array in comparison to fully populated arrays. For ideal measurements, where spatial stationarity is maintained and measurement error is minimal, the performance of… read more here.

Keywords: array; coherence; sparse array; array performance ... See more keywords

A Novel Designed Sparse Array for Noncircular Sources with High Degree of Freedom

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recommendations! Published in 2019 at "Mathematical Problems in Engineering"

DOI: 10.1155/2019/1264715

Abstract: The existing coprime array is mainly applicable to circular sources, while the virtual array degree of freedom (DOF) for noncircular sources is enhanced limitedly. In order to perfect the array DOF and the direction of… read more here.

Keywords: degree freedom; array; noncircular sources; sparse array ... See more keywords