Results 71 to 80 of about 10,533 (195)

Beyond 5G and Non‐terrestrial Network (NTN) Integrated Architecture: Access Challenges for Expanding Artificial Intelligence of Things (AIoT)

International Journal of Satellite Communications and Networking, Volume 44, Issue 4, Page 378-393, July/August 2026.
ABSTRACT This study analyzes the architecture of the beyond 5G‐NTN (Non‐terrestrial Network) integrated network and presents the technical, legal, and regulatory challenges and considerations for expanding the Artificial Intelligence of Things (AIoT) ecosystem.
Byung Woon Kim, Ga Eun Choi
wiley   +1 more source

Optically Transparent Ka‐Band Absorber With Multi‐Fractal Rings and a Metal Mesh Ground Plane

Microwave and Optical Technology Letters, Volume 68, Issue 6, June 2026.
ABSTRACT An optically transparent absorber based on multi‐fractal ring resonators and a metal mesh ground plane is presented for Ka‐band applications. By merging multiple resonances, the proposed absorber maintains an absorption bandwidth from 25.8 to 31.1 GHz.
Junseong Bae, Seoyeong Min, Suho Chang, Daehyeon Kim, Donggeun An, Wonbin Hong, Youngno Youn   +6 more
wiley   +1 more source

Aerial and Space‐Borne Seismology on Venus: Viability and Design Implications for Future Missions

Earth and Space Science, Volume 13, Issue 6, June 2026.
Abstract Venus' evolution remains a mystery because of the lack of in situ geophysical data to constrain its interior structure. Recently‐selected planetary missions VERITAS (NASA), DAVINCI+ (NASA), and EnVision (ESA) will investigate the planet's interior, surface, and atmospheric chemistry.
Quentin Brissaud, Chenxi Kong, Marouchka Froment, John Wilding, Anna J. P. Gülcher, Jennifer M. Jackson, Iris van Zelst, Raphaël F. Garci, Celine Marie Solberg, Sven Peter Näsholm   +9 more
wiley   +1 more source

Numerically Optimized Fourier Transform-Based Beamforming Accelerated by Neural Networks

Applied Sciences
Conventional beamforming methods for reconfigurable reflector antennas assume full control over the amplitude and phase of the reflected field. Here, we develop a novel beamforming methodology for reflecting Programmable Metasurfaces (PMS) with ...
Keivan Kaboutari, Abdelghafour Abraray, Stanislav Maslovski   +2 more
doaj   +1 more source

Adapting Deep Learning Phase Detectors for Seismic Array Processing

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Deep learning (DL) has considerably advanced single‐station seismic phase detection, but its integration into seismic array processing remains largely unexplored. We evaluate three strategies for adapting the previously developed TPhaseNet detector for regional phase detection to array data: (a) ensemble detection through stacking of single ...
A. Köhler, T. Stangeland, S. Mæland, B. Dando   +3 more
wiley   +1 more source

Reinforcement Learning-Based Joint Beamwidth and Beam Alignment Interval Optimization in V2I Communications

Sensors
The directional antenna combined with beamforming is one of the attractive solutions to accommodate high data rate applications in 5G vehicle communications.
Jihun Lee, Hun Kim, Jaewoo So
doaj   +1 more source

Analysis of Simulated and Measured Indoor Channels for mm-Wave Beamforming Applications

International Journal of Antennas and Propagation, 2018
Ray tracing- (RT-) assisted beamforming, where beams are directly steered to dominant paths tracked by ray tracing simulations, is a promising beamforming strategy, since it avoids the time-consuming exhaustive beam searching adopted in conventional beam
Anders Karstensen, Wei Fan, Fengchun Zhang, Jesper Ø. Nielsen, Gert F. Pedersen   +4 more
doaj   +1 more source

Backward Darts and the Subsequent Scattered Discharges Occurring Along Lightning Positive Leader Branches

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 10, 28 May 2026.
Abstract We used the LOw‐Frequency ARray (LOFAR) to identify two new types of lightning discharges occurring along the tracks of earlier positive leaders. The first is a kind of intracloud dart leader that we call a “backward dart” whose behavior appears counterintuitive given the positive polarity of the channel, as they are negative dart leaders that
Bin Wu, Brian M. Hare, Olaf Scholten, Ningyu Liu, Joe Dwyer, Steve Cummer, Marten Lourens, Chris Sterpka, Paulina Turekova   +8 more
wiley   +1 more source

Temporal Variations in Seismic Ambient Noise Identify Seasonal Changes in Basal Conditions at Sermeq Kujalleq in Kangia, Greenland

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Subglacial processes are key to glacier dynamics but remain poorly constrained due to limited in situ observations. We use continuous seismic and Global Navigation Satellite System (GNSS) measurements to investigate summer basal conditions at Sermeq Kujalleq in Kangia (SKK; Jakobshavn Isbræ), Kalaallit Nunaat (Greenland).
Janneke van Ginkel, Adrien Wehrlé, Ana Nap, Fabian Walter, Andrea Kneib‐Walter, Hugo Rousseau, Martin P. Lüthi   +6 more
wiley   +1 more source

Multi-mode single sideband time modulation harmonic adaptive beamforming

Zhongguo Jianchuan Yanjiu
ObjectiveThis study proposes an innovative beamforming method to achieve high-efficiency harmonic adaptive beamforming through multi-mode single sideband time modulation technology.MethodA multi-mode single sideband time modulation module containing ...
Tao YANG, Xiaonan ZHAO, Zhenji LIU, Tingting FAN, Liu YANG, Yu XIA, Jingfeng CHEN   +6 more
doaj   +1 more source