Results 41 to 50 of about 326 (121)

DBF Processing in Range-Doppler Domain for MWE SAR Waveform Separation Based on Digital Array-Fed Reflector Antenna

open access: yesRemote Sensing, 2020
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

open access: yesJournal of Synchrotron Radiation, Volume 33, Issue 5, Page 1522-1530, September 2026.
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

open access: yesSensors, 2017
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

open access: yesRemote Sensing, 2020
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

open access: yesGeophysical Prospecting, Volume 74, Issue 7, September 2026.
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

open access: yesGeophysical Prospecting, Volume 74, Issue 7, September 2026.
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

open access: yesLeida xuebao, 2019
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 in Magneto‐Piezoelectric Composites for Material‐Encoded Mechanoperception

open access: yesAdvanced Materials, Volume 38, Issue 48, 26 August 2026.
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

Quadratic Frequency Modulation Signals Parameter Estimation Based on Product High Order Ambiguity Function-Modified Integrated Cubic Phase Function

open access: yesInformation, 2019
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

Aharonov–Bohm Effect for Cooper Pairs in Kerr Spacetime: Gravitomagnetic Phase Shifts From Frame Dragging

open access: yesAnnalen der Physik, Volume 538, Issue 8, August 2026.
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

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