Results 41 to 50 of about 326 (121)
With the rapid development of the multiple-input multiple-output synthetic aperture radar (MIMO SAR) system, the demands for miniaturization and high gain of antenna are increasing.
Shenjing Wang +5 more
doaj +1 more source
Artifact segmentation using the U‐Net architecture for powder X‐ray diffraction images
The capabilities of a U‐Net convolutional neural network for masking artifacts in time‐resolved X‐ray diffraction measurements of battery materials are demonstrated.Modern synchrotron X‐ray facilities generate X‐ray diffraction (XRD) image data at rates that far exceed the capacity of manual analysis, yet critical processing steps such as artifact ...
Albert Vong +9 more
wiley +1 more source
First Spaceborne SAR-GMTI Experimental Results for the Chinese Gaofen-3 Dual-Channel SAR Sensor
In spaceborne synthetic aperture radar (SAR) sensors, it is a challenging task to detect ground slow-moving targets against strong clutter background with limited spatial channels and restricted pulse repetition frequency (PRF).
Chenghao Wang +2 more
doaj +1 more source
Single-Look SAR Tomography of Urban Areas
Synthetic aperture radar (SAR) tomography (TomoSAR) is a multibaseline interferometric technique that estimates the power spectrum pattern (PSP) along the perpendicular to the line-of-sight (PLOS) direction.
Gustavo Daniel Martín-del-Campo-Becerra +3 more
doaj +1 more source
An Eikonal‐Based Angle‐Domain Least‐Squares Kirchhoff Depth Migration in General Anisotropic Media
ABSTRACT Least‐squares migration (LSM) is an inversion‐based imaging method that seeks a reflectivity model whose predicted data best fit the recorded seismic data in a least‐squares sense. However, conventional LSM can be unreliable for anisotropic reflection data if reflection angles are neglected.
Paulo H. B. Alves +3 more
wiley +1 more source
Evaluating Fragmentation Detection in Block Caves Using Synthetic Muon Tomography
ABSTRACT Muon tomography is a geophysical imaging technique with growing application across a range of geological and industrial settings. By observing the arrival of naturally occurring muons, it is possible to reconstruct subsurface density distributions in three dimensions.
M. A. McLean +3 more
wiley +1 more source
Forward-looking Multi-channel SAR Adaptive Identification to Suppress Deception Jamming
Forward-looking multi-channel SAR imaging suffers from ambiguity regarding left and right echoes. To deblur the imaging process, spatial resources must be used, which make the imaging process more complex than the general side-looking SAR.
MENG Zhichao, LU Jingyue, ZHANG Lei
doaj +1 more source
Field‐programmed anisotropy imparts material‐level intelligence to soft composites. Magnetic torque dynamics drive magneto‐piezoelectric nanowires from random dispersion into deterministic axial alignment. The resulting hierarchical percolation networks confine electromechanical coupling to specific axes and intrinsically decouple superposed force ...
Yubin Kim +9 more
wiley +1 more source
In inverse synthetic aperture radar (ISAR) imaging system for targets with complex motion, such as ships fluctuating with oceanic waves and high maneuvering airplanes, the multi-component quadratic frequency modulation (QFM) signals are more suitable ...
Lei Zhu
doaj +1 more source
ABSTRACT The unification of quantum mechanics and general relativity remains a central problem in fundamental physics. Here, we study the gravitomagnetic Aharonov–Bohm (AB) effect for Cooper pairs in Kerr spacetime. Frame‐dragging by a rotating black hole (BH) generates an effective vector potential through the off‐diagonal metric term gtϕ$g_{t\phi }$,
Erdem Sucu, İzzet Sakallı
wiley +1 more source

