Results 1 to 10 of about 53,760 (259)

Frequency Aliasing-Based Spatial-Wavenumber Filter for Online Damage Monitoring

open access: yesShock and Vibration, 2020
The spatial-wavenumber filter method can extract the specific mode of the Lamb wave, thereby distinguishing the incident wave and the damage reflection wave. This method has been widely studied for damage imaging.
Bin Liu   +3 more
doaj   +2 more sources

Dispersion Compensation Method for Lamb Waves Based on Measured Wavenumber

open access: yesShock and Vibration, 2020
In this study, a delta wavenumber dispersion compensation (∆K-DC) method was developed and applied, not only with the theoretical wavenumber but also with the measured wavenumber.
J. Li, Y. Han
doaj   +2 more sources

Performance Analysis of Wavenumber Domain Algorithms for Highly Squinted SAR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
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 ...
Xing Chen, Zhenyu Hou, Zhen Dong
exaly   +3 more sources

A Lamb Wave Wavenumber-Searching Method for a Linear PZT Sensor Array

open access: yesSensors, 2019
In this paper, a wavenumber−searching method based on time-domain compensation is proposed to obtain the wavenumber of the Lamb wave array received signal.
Bin Liu, Tingzhang Liu, Jianfei Zhao
doaj   +2 more sources

Depth wavenumber spectral decomposition based on orthogonal matching pursuit and its application in hydrocarbon reservoir prediction

open access: yes地质科技通报
Objective Conventional seismic attribute analysis in the time domain is based on the conversion from prestack depth migration data to time domain data, which will cause the loss of effective high-frequency information.
Tian TANG   +5 more
doaj   +2 more sources

Enhancement of Kinematic Accelerations by Wavenumber Correlation Filtering

open access: yesSensors, 2016
To obtain kinematic accelerations with high accuracy and reliability, multiple Global Positioning System (GPS) receivers with a single antenna can be used for airborne gravimetry.
Chang-Ki Hong, Jay Hyoun Kwon
doaj   +2 more sources

On Wave Solutions of Dynamic Equations of Hemitropic Micropolar Thermoelasticity [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2019
Coupled equations of hemitropic thermoelastic micropolar continuum formulated in terms of displacement vector, microrotation vector and temperature increment are considered. Thermodiffusion mechanism of heat transport is assumed. Hemitropic thermoelastic
Kovalev, Vladimir Aleksandrovich   +1 more
doaj   +1 more source

Processing Missile-Borne SAR Data by Using Cartesian Factorized Back Projection Algorithm Integrated with Data-Driven Motion Compensation

open access: yesRemote Sensing, 2021
Due to the independence of azimuth-invariant assumption of an echo signal, time-domain algorithms have significant performance advantages for missile-borne synthetic aperture radar (SAR) focusing with curve moving trajectory.
Min Bao, Song Zhou, Mengdao Xing
doaj   +1 more source

Spatiotemporal dynamics of high-wavenumber turbulence in a basic laboratory plasma [PDF]

open access: yes, 2022
0000-0002-5222-6082High-spatial resolution observation of high-wavenumber broadband turbulence is achieved by controlling the magnetic field to be relatively low and measuring with a azimuthally arranged multi-channel Langmuir array in a basic laboratory
YAMADA, Takuma   +20 more
core   +1 more source

Nonlinear disturbance evolution in a two-dimensional boundary layer along an elastic plate and induced radiated sound [PDF]

open access: yes, 2010
The interaction between a boundary-layer flow and an elastic plate is addressed by direct numerical simulation, taking into account the full coupling between the fluid flow and the flexible wall.
EHRENSTEIN, Uwe   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy