First Evidence of Coherent Bands of Strong Turbulent Layers Associated with High-Wavenumber Internal-Wave Shear in the Upstream Kuroshio
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-15167-1
Abstract: The upstream Kuroshio flows through Okinawa Trough and the Tokara island chain, the region near the continental shelf of the East China Sea and shallow seamounts, where the Kuroshio can induce strong mixing over the… read more here.
Keywords: topography; kuroshio; strong turbulent; upstream kuroshio ... See more keywords
An algorithm based on logarithm of wavenumber amplitude for detection of delamination in carbon fiber composite
Sign Up to like & getrecommendations! Published in 2021 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/ac0de3
Abstract: Delamination is one of the most common types of damage/defect in carbon/glass fiber reinforced composites and many researchers use frequency-wavenumber analysis to detect delamination. There are large fluctuations in amplitudes when Lamb wave propagates in… read more here.
Keywords: delamination; carbon; amplitude; fiber ... See more keywords
Comparison of detailed experimental wavenumber spectra with gyrokinetic simulation aided by two-dimensional full-wave simulations
Sign Up to like & getrecommendations! Published in 2017 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/aa645b
Abstract: The importance of using a comprehensive suite of tools for the validation of a gyrokinetic code is described. This is detailed by presenting experimental wavenumber spectra which show pronounced differences, although they are measured at… read more here.
Keywords: wavenumber spectra; gyrokinetic simulation; two dimensional; experimental wavenumber ... See more keywords
Impact of the turbulence wavenumber spectrum and probing beam geometry on Doppler reflectometry perpendicular velocity measurements
Sign Up to like & getrecommendations! Published in 2023 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/accd1a
Abstract: The perpendicular propagation velocity of turbulent density fluctuations is an important parameter in fusion plasmas, since sheared plasma flows are crucial for reducing turbulence, and thus an essential input parameter for turbulent transport simulations. In… read more here.
Keywords: wavenumber; velocity; geometry; reflectometry ... See more keywords
Reconstruction of Dispersion Curves in the Frequency-Wavenumber Domain Using Compressed Sensing on a Random Array
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Journal of Oceanic Engineering"
DOI: 10.1109/joe.2016.2644780
Abstract: In underwater acoustics, shallow-water environments act as modal dispersive waveguides when considering low-frequency sources, and propagation can be described by modal theory. In this context, propagated signals are composed of few modal components, each of… read more here.
Keywords: wavenumber domain; frequency wavenumber; curves frequency; wavenumber ... See more keywords
Performance Analysis of Wavenumber Domain Algorithms for Highly Squinted SAR
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"
DOI: 10.1109/jstars.2023.3237552
Abstract: Wavenumber domain algorithms have unique advantages in processing highly squinted synthetic aperture radar data. This article studies the performance of three commonly used wavenumber domain algorithms including the classical wavenumber domain (CWD) algorithm, extended wavenumber… read more here.
Keywords: domain algorithms; wavenumber; analysis; wavenumber domain ... See more keywords
Spatially Variable Phase Filtering Algorithm Based on Azimuth Wavenumber Regularization for Bistatic Spotlight SAR Imaging Under Complicated Motion
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2021.3139965
Abstract: The 2-D space variance of echo signals is the key problem of image processing for bistatic synthetic aperture radar (BiSAR) under nonlinear platform trajectories. Although there are some existing studies that present solutions to deal… read more here.
Keywords: spatially variable; variable phase; phase; wavenumber ... See more keywords
Soliton interactions of a (2+1)-dimensional nonlinear Schrödinger equation in a nonlinear photonic quasicrystal or Kerr medium
Sign Up to like & getrecommendations! Published in 2017 at "Modern Physics Letters B"
DOI: 10.1142/s0217984917501305
Abstract: Under investigation are the soliton interactions for a (2+1)-dimensional nonlinear Schrodinger equation, which can describe the dynamics of a nonlinear photonic quasi-crystal or vortex Airy beam in a Kerr medium. With the symbolic computation and… read more here.
Keywords: wavenumber; soliton; nonlinear photonic; kerr medium ... See more keywords
Damage imaging in a stiffened curved composite sandwich panel with wavenumber index via Riesz transform
Sign Up to like & getrecommendations! Published in 2019 at "Structural Health Monitoring"
DOI: 10.1177/1475921719858432
Abstract: Imaging a damage using the phase of wavefield “video” in the physical domain is developed and applied to a stiffened curved composite sandwich panel for visualization of a barely visible impact damage. The ultrasonic guided… read more here.
Keywords: panel; wavenumber index; geometry; damage ... See more keywords