Results 171 to 180 of about 235,909 (235)
Some of the next articles are maybe not open access.
Nature Photonics, 2022
Integrated nonlinear wavelength converters transfer optical energy from lasers or quantum emitters to other useful colours, but chromatic dispersion limits the range of achievable wavelength shifts.
J. Stone +5 more
semanticscholar +1 more source
Integrated nonlinear wavelength converters transfer optical energy from lasers or quantum emitters to other useful colours, but chromatic dispersion limits the range of achievable wavelength shifts.
J. Stone +5 more
semanticscholar +1 more source
MIMO-SAR 3-D Imaging Based on Range Wavenumber Decomposing
IEEE Sensors Journal, 2021Multiple-input-multiple-output synthetic aperture radar (MIMO-SAR) technology is an effective scheme to achieve there-dimensional (3-D) imaging in millimeter wave and terahertz band.
Guan Yang +4 more
semanticscholar +1 more source
, 2021
Ultrasonic full-matrix imaging can sense small defects in non-destructive evaluation using full-matrix capture (FMC). However, the accompanying heavy computational burden limits FMC’s applications, especially for real-time scenarios.
Haoran Jin, Jian Chen
semanticscholar +1 more source
Ultrasonic full-matrix imaging can sense small defects in non-destructive evaluation using full-matrix capture (FMC). However, the accompanying heavy computational burden limits FMC’s applications, especially for real-time scenarios.
Haoran Jin, Jian Chen
semanticscholar +1 more source
Ultrasonics, 2020
Hidden corrosion damage of aircraft structures is a potential threat to the flight safety and a major maintenance factor for aircraft. In previous researches on corrosion detection, the local wavenumber estimation is obtained from a sliding wavenumber ...
Tianfang Gao +3 more
semanticscholar +1 more source
Hidden corrosion damage of aircraft structures is a potential threat to the flight safety and a major maintenance factor for aircraft. In previous researches on corrosion detection, the local wavenumber estimation is obtained from a sliding wavenumber ...
Tianfang Gao +3 more
semanticscholar +1 more source
Structural Health Monitoring, 2020
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.
Huan-Yu Chang, F. Yuan
semanticscholar +1 more source
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.
Huan-Yu Chang, F. Yuan
semanticscholar +1 more source
, 2020
This paper presents the use of wavelet-based wavenumber filtering that can be used for damage detection with full steady-state wavefield laser scanning.
J. Jeon +5 more
semanticscholar +1 more source
This paper presents the use of wavelet-based wavenumber filtering that can be used for damage detection with full steady-state wavefield laser scanning.
J. Jeon +5 more
semanticscholar +1 more source
Wavenumber transition and wavenumber vacillation in Eady-type baroclinic flows
Quarterly Journal of the Royal Meteorological Society, 1988AbstractWavenumber transition and wavenumber vacillation are studied numerically in a ‘maximum simplification’ model of the Eady type with uneven Ekman dissipation. The spectral wave solution contains three waves having adjacent zonal wavenumbers and the gravest meridional mode. The model only allows for wave‐mean‐flow interaction.As the stratification
H.‐Y. Weng, A. Barcilon
openaire +1 more source
High Resolution Fourier Transform Spectroscopy, 1992
The accuracy of the wavenumber measurements is often not as good as the level of their precision. To get better absolute line positions and to have this new advantage widely spread among all FT users, the need of a grid of consistent and accurate wavenumber standards is necessary. We review the present situation.
Q. Kou, G. Guelachvili
openaire +1 more source
The accuracy of the wavenumber measurements is often not as good as the level of their precision. To get better absolute line positions and to have this new advantage widely spread among all FT users, the need of a grid of consistent and accurate wavenumber standards is necessary. We review the present situation.
Q. Kou, G. Guelachvili
openaire +1 more source
Unified Far-Field and Near-Field in Holographic MIMO: A Wavenumber-Domain Perspective
IEEE Communications MagazineThis article conceives a unified representation for near-field and far-field holographic multiple-input multiple-output (HMIMO) channels, addressing a practical design dilemma: “Why does the angular-domain representation no longer function effectively ...
Yuanbin Chen +5 more
semanticscholar +1 more source