Results 1 to 10 of about 235,909 (235)

Wavenumber-Domain Joint Estimation of Rotation Parameters and Scene Center Offset for Large-Angle ISAR Cross-Range Scaling [PDF]

open access: yesSensors
While the wavenumber-domain approach enables large-angle inverse synthetic aperture radar (ISAR) cross-range scaling, its practical application remains constrained by the target’s non-uniform rotation and scene center offset (SCO).
Bakun Zhu   +7 more
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

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   +3 more
doaj   +1 more source

Calibration of an Airborne Interferometric Radar Altimeter over the Qingdao Coast Sea, China

open access: yesRemote Sensing, 2020
Calibration/Validation (Cal/Val) of satellite altimeters is fundamental for monitoring onboard sensor performance and ensuring long-term data quality.
Lei Yang   +11 more
doaj   +1 more source

Phase Velocity and Attenuation of Longitudinal Shear Vibrations of Hollow Poroelastic Cylinders

open access: yesInternational Journal of Applied Mechanics and Engineering, 2014
The present paper is devoted to the study of phase velocity and attenuation of longitudinal shear vibrations of hollow poroelastic circular cylinders in the presence of dissipation.
S. Ahmed Shah, S. Javvad Hussaini
doaj   +1 more source

Study Of Three Dimensional Propagation Of Waves In Hollow Poroelastic Circular Cylinders

open access: yesInternational Journal of Applied Mechanics and Engineering, 2015
Employing Biot’s theory of wave propagation in liquid saturated porous media, waves propagating in a hollow poroelastic circular cylinder of infinite extent are investigated.
S.A. Shah
doaj   +1 more source

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   +1 more source

A new global coupled atmosphere-ocean wavenumber-4 pattern in Southern mid–latitudes during austral summer and its climate linkage

open access: yesEnvironmental Research Communications, 2023
A new pattern referred to as the coupled ocean-atmosphere wavenumber-4 (COAW4) pattern has been identified in the Southern mid-latitudes during austral summer. This pattern consists of a wavenumber-4 pattern in the anomalous 200-hPa meridional wind and a
Lejiang Yu   +3 more
doaj   +1 more source

Surface instability of a semi-infinite isotropic laminated plate under surface van der Waals forces

open access: yesArchives of Mechanics, 2015
By means of complex variable method, the present work demonstrates that the surface of a semi-infinite isotropic laminated plate that is being attracted to a rigid contactor through van der Waals forces is always unstable.
X. Wang, Y. Xu, K. Zhou
doaj   +1 more source

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