Results 171 to 180 of about 3,098 (255)

A Deep Learning Model of Lightning Stroke Density

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract Lightning plays a crucial role in the Earth's climate system; however, existing parameterizations for use in forecasting and earth system models show room for improvement in capturing spatial and temporal variations in its frequency. This study develops deep learning‐based parameterizations of lightning stroke density using meteorological ...
Randall Jones II, Joel A. Thornton, Chris J. Wright, Robert A. Holzworth   +3 more
wiley   +1 more source

A high precision vital signs detection method based on millimeter wave radar. [PDF]

Sci Rep
Chen Y, Yuan J, Tang J.
europepmc   +1 more source

Unique Vertical Characteristics of Hydrometeors Observed in the Tropical Cyclone Outer Rainband Region

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract This study investigates the vertical cloud microphysics in the stratiform sectors of Hurricane Tammy's outer rainband region and their relationship to local environments. We used in situ Optical Array Probe (OAP) measurements and tail‐Doppler radar data from four NOAA P‐3 spiral modules on 19–22 October 2023, as Tammy intensified from a ...
Xin Yang, Xuejin Zhang, Jun A. Zhang
wiley   +1 more source

Classification of Flying Drones Using Millimeter-Wave Radar: Comparative Analysis of Algorithms Under Noisy Conditions. [PDF]

Sensors (Basel)
Larrat M, Sales C.
europepmc   +1 more source

Decoupling Backward Scattering Control and Forward Beamformed Communication in a Shared‐Aperture Retro‐Reflective/Transmissive Metasurface

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Conceptual illustration of the retro‐reflective and transmissive metasurface (RRTM). The blue radar establishes communication with the UAV via the transmissive mode, whereas the purple surveillance radar acquires the status of friendly units through the retro‐reflective mode and the two modes operate simultaneously within the same decoupled aperture ...
Shulei Zhang, Ruichao Zhu, Yuxiang Jia, Fan Wu, Xinqi Cai, Zhihui Zhang, Dan Liu, Yuxiao Guo, Jiafu Wang   +8 more
wiley   +1 more source

High-Precision 2D-DOA Estimation Method for Millimeter-Wave Radar Based on Double-Parallel Linear Array and Joint IAA-RIT. [PDF]

Sensors (Basel)
Yu D, Du L, Bai J, Chen Y.
europepmc   +1 more source

Assessing and Quantifying Variability Across Vacuum‐Assisted Resin Infusion Variants for Aerospace‐Grade Composite Manufacturing

Polymer Composites, Volume 47, Issue 15, Page 13664-13684, 10 August 2026.
Radar‐plot comparison of consolidation quality and flexural performance of composite laminates manufactured by six vacuum‐infusion routes, evaluated at the resin‐inlet and vacuum‐port regions. ABSTRACT Conventional vacuum‐assisted resin transfer molding (C‐VARTM) is recognized as a cost‐effective resin infusion technique for manufacturing large‐scale ...
Ilhan Kahraman, Nilperi Uysal, Çağlar Subaşı, Selin Dursun, Muhammet İskender, Özgü Çalın, Uğur Şimşir, Hatice S. Sas, A. Tuğrul Seyhan   +8 more
wiley   +1 more source

A Deep Learning Method for Human Sleeping Pose Estimation with Millimeter Wave Radar. [PDF]

Sensors (Basel)
Li Z, Chen K, Xie Y.
europepmc   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, Volume 28, Issue 15, 5 August 2026.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, Volume 38, Issue 45, 13 August 2026.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +8 more
wiley   +1 more source