Results 21 to 30 of about 297,354 (275)
Multi Spherical Wave Imaging Method Based on Ultrasonic Array
Sensors, 2022 The imaging range of traditional plane wave imaging is usually limited by the directivity of the plane wave. In this paper, a multi spherical wave imaging method based on an ultrasonic array is proposed, which radiates both compression and shear waves in
Zhi-Ying Liu +3 more
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Sensors, 2022 The multi-angle Doppler method was introduced for the estimation of velocity vectors by measuring axial velocities from multiple directions. We have recently reported that the autocorrelation-based velocity vector estimation could be ameliorated ...
Hideyuki Hasegawa +3 more
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Omega-K Algorithm Using Plane Wave Approximation for Forward-Looking Imaging Radar [PDF]
Journal of Electromagnetic Engineering and Science, 2022 We propose an Omega-K algorithm that uses plane wave approximation for image formation in forward-looking imaging radar (FIRA) with the multi-input/double-output configuration.
Byunglae Cho, Sungwon Hong, Kichul Yoon
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A Radon diffraction theorem for plane wave ultrasound imaging
The Journal of the Acoustical Society of America, 2023 The rising demand on high frame rate ultrasound imaging applications necessitates the development of fast algorithms for plane wave image reconstruction. We introduce a new class of plane wave reconstructions that relies on a relation between receive data and image data in the Radon domain.
Hans-Martin Schwab, Richard Lopata
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Novel Fourier-domain constraint for fast phase retrieval in coherent diffraction imaging [PDF]
, 2011 Coherent diffraction imaging (CDI) for visualizing objects at atomic resolution has been realized as a promising tool for imaging single molecules. Drawbacks of CDI are associated with the difficulty of the numerical phase retrieval from experimental ...
Chapman +22 more
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IET Microwaves, Antennas & Propagation, 2022 The target scattering characteristics in microwave band are necessary to be researched for Orbital‐Angular‐Momentum (OAM) wave‐based radar applications.
Xiaoxiao Zhang +5 more
doaj +1 more source
IEEE Access, 2022 Radar-based algorithms for electromagnetic (EM) imaging are developed based on the assumption that EM has a local planar wave front inside the imaging domain.
Azin S. Janani +3 more
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Applied Sciences, 2019 The recently introduced plane-wave compounding method based on multiple plane-wave excitation has enabled several new applications due to its high frame rate (>1000 Hz).
Dooyoung Go +3 more
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Near-Field Millimeter-Wave Imaging via Multi-Plane MIMO Arrays
IEEE Access, 2023 Multiple-input multiple-output (MIMO) array-based millimeter-wave (MMW) imaging has broad application prospects in concealed weapons detection due to its capability of high resolution at a reasonable cost.
Guangnan Xing +4 more
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Aberrated dark-field imaging systems [PDF]
, 2018 We study generalized dark-field imaging systems. These are a subset of linear shift-invariant optical imaging systems, that exhibit arbitrary aberrations, and for which normally-incident plane-wave input yields zero output.
Beltran, Mario A., Paganin, David M.
core +2 more sources