DOA estimation of the quasi‐stationary signal using sparse reconstruction
IET Radar, Sonar & Navigation, 2022 Given the problem of the direction of arrival (DOA) estimation of quasi‐stationary signals, a sparse reconstruction algorithm based on the sparse array is proposed in this study to improve the DOA estimation performance.
Fan Wu +4 more
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Sparse Array DFT Beamformers for Wideband Sources
, 2019 Sparse arrays are popular for performance optimization while keeping the hardware and computational costs down. In this paper, we consider sparse arrays design method for wideband source operating in a wideband jamming environment.
Amin, Moeness G., Hamza, Syed A.
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Sparse Total Focus Imaging of Rail Transit Rail Defects Based on Grey Wolf Algorithm
Chengshi guidao jiaotong yanjiu[Objective] Using the ultrasonic phased array technology can realize high-precision imaging detection of rail transit rail defects. However, the widely used FMC-TFM (full matrix capture-total focusing method) has the disadvantages of long computation ...
Lubin QIAN +4 more
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Ternary redundant sparse linear array design with high robustness
Xibei Gongye Daxue Xuebao, 2023 Sparse linear array is prone to element failure affected by environmental and other factors in practical application, resulting in the decline of degrees of freedom and the attenuation or even failure of direction of arrival (DOA) estimation performance.
HOU Shuhua +4 more
doaj +1 more source
Sparse Rectangular and Spiral Array Designs for 3D Medical Ultrasound Imaging
Sensors, 2019 In three-dimensional (3D) medical ultrasound imaging with two-dimensional (2D) arrays, sparse 2D arrays have been studied to reduce the number of active channels.
Hansol Yoon, Tai-Kyong Song
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Pattern Synthesis for Sparse Arrays by Compressed Sensing and Low-Rank Matrix Recovery Methods
International Journal of Antennas and Propagation, 2018 Antenna array pattern synthesis technology plays a vital role in the field of smart antennas. It is well known that the pattern synthesis of homogeneous array is the key topic of pattern synthesis technology.
Ting Wang, Ke-Wen Xia, Ning Lu
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Density of States and Conductivity of Granular Metal or Array of Quantum Dots
, 2004 The conductivity of a granular metal or an array of quantum dots usually has the temperature dependence associated with variable range hopping within the soft Coulomb gap of density of states. This is difficult to explain because neutral dots have a hard
A. I. Yakimov +16 more
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Parallel structurally-symmetric sparse matrix-vector products on multi-core processors
, 2010 We consider the problem of developing an efficient multi-threaded implementation of the matrix-vector multiplication algorithm for sparse matrices with structural symmetry.
Ainsworth Jr., George O. +2 more
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Sparse Array Design Exploiting the Augmented Conjugate Correlation Statistics for DOA Estimation
IEEE Access, 2020 With the augmentation of the non-zero conjugate correlation statistics of some modulating signals, enlarged degrees of freedom (DOFs) can be achieved with conventional sparse arrays as proposed by many literatures.
Jinyang Song, Feng Shen, Jiajun Shen
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A Nulling Wide Field Imager for Exoplanets Detection and General Astrophysics
, 2002 We present a solution to obtain a high-resolution image of a wide field with the central source removed by destructive interference. The wide-field image is created by aperture synthesis with a rotating sparse array of telescopes in space. Nulling of the
Aime +32 more
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