Results 51 to 60 of about 2,110 (193)

Atmospheric Specifications for Infrasound Studies: 2. The Added Value of a High‐Top Model, UA‐ICON

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 1, 16 January 2026.
Abstract Infrasound monitoring activities that deal with long‐range acoustic propagation, as within the Comprehensive Nuclear‐Test‐Ban Treaty's (CTBT), need accurate and operational modeling of the atmosphere up to the lower thermosphere. Yet, operational meteorological products issued by weather services are topped at around 80 km altitude with a ...
S. Kristoffersen, C. Listowski, R. Wing, S. Khaykin, G. Baumgarten, A. Hauchecorne, A. Le Pichon, J. Vergoz   +7 more
wiley   +1 more source

Robust adaptive beamforming method based on desired signal steering vector estimation and interference-Plus-noise covariance matrix reconstruction

The Journal of Engineering, 2019
Here, the authors propose a robust adaptive beamforming method based on desired signal steering vector estimation and interference-plus-noise covariance matrix reconstruction, so as to attenuate the influences of the desired signal steering vector ...
Junsheng Huang, Hongtao Su, Yang Yang
doaj   +1 more source

A Minimally Invasive Framework Reveals Region‐Specific Cerebrovascular Remodeling in Aging Using Intravital Functional Ultrasound Imaging and Ultrasound Localization Microscopy (fUS‐ULM)

Advanced Science, Volume 13, Issue 1, 5 January 2026.
A high‐resolution intravital imaging platform combining functional ultrasound and localization microscopy enables longitudinal, minimally invasive assessment of cerebrovascular function in aging studies. The present investigation reveals aging‐related reductions in neurovascular coupling, arteriole‐to‐venule ratio and vascular density, introducing a ...
Sharon Negri, Adam Nyul‐Toth, Madison Milan, Eva Troyano‐Rodriguez, Sherwin Tavakol, Jennifer Ihuoma, Zeke Reyff, Rakesh Rudraboina, Rafal Gulej, Raymond Jang, Anna Csiszar, Zoltan Ungvari, Audrey Cleuren, David R Miller, Andriy Yabluchanskiy, Mickael Tanter, Stefano Tarantini   +16 more
wiley   +1 more source

Pneumatically‐Actuated Liquid Metal‐Based Frequency Reconfigurable Antenna

Advanced Science, Volume 13, Issue 5, 27 January 2026.
A look at a flexible, frequency‐tuning antenna A Soft Solution: Introducing a new antenna design made with liquid metal composites. A Full Package: Combining flexible antennas with pneumatic actuators. End‐to‐End Control: Automatic reconfiguration according to signal strength.
Yiwen Song, Aditya Bharambe, Dinesh K. Patel, Barbara Zhuo, Mason Zadan, Carmel Majidi, Swarun Kumar   +6 more
wiley   +1 more source

Phase‐Changing Vanadium Oxides for Electromagnetic Radiation Management

Small Science, Volume 6, Issue 1, January 2026.
Vanadium dioxide's reversible insulator‐to‐metal transition near room temperature enables ultrafast, broadband electromagnetic modulation from ultraviolet to radiofrequencies. With femtosecond switching speeds and cycling endurance exceeding 100 million cycles, VO2 metasurfaces achieve tuneable absorption, beam steering, and polarisation control. These
Mohammad Taha, Torben Daeneke, Sumeet Walia   +2 more
wiley   +1 more source

Robust Spectral and Energy Efficiency Tradeoff for RIS‐Aided Multi‐User Communication

IET Communications, Volume 20, Issue 1, January/December 2026.
In this work, an RIS‐aided multi‐user network with imperfect CSI is investigated. Correspondingly, we focus on balancing SE and EE through the collaborative design of the base station (BS)'s precoding matrix and the RIS's phase shifts, which consider the transmit power budget and the channel uncertainties constraints.
Xiandeng He, Yilin Wang, Shun Zhang
wiley   +1 more source

Robust Adaptive Null Broadening Method Based on FDA-MIMO Radar

IEEE Access, 2020
Beamforming plays an important role in the array radar anti-interference. However, the interference targets with fast speed may move out of the narrow null area of the beampattern.
Zihang Ding, Junwei Xie, Bo Wang, Haowei Zhang   +3 more
doaj   +1 more source

An Energy‐Tiered Clustering‐Based Blind Detector for RIS‐RSM Systems

IET Communications, Volume 20, Issue 1, January/December 2026.
This paper proposes an energy‐tiered structure initialization (ETSI) algorithm for blind detection in reconfigurable intelligent surface (RIS)‐assisted spatial modulation systems. By decomposing the modulation constellation into multiple energy tiers and leveraging structured prototype initialization with tier‐normalized refinement, ETSI effectively ...
Lijuan Zhang, Juncheng Zhou, Zhongpeng Wang   +2 more
wiley   +1 more source

Joint Optimization Algorithm for UAV Trajectory and Beamforming for NOMA‐Based Integrated Sensing and Communication (ISAC) Systems

IET Communications, Volume 20, Issue 1, January/December 2026.
This paper investgates a unmanned aerial vehicle‐assisted non‐orthogonal multiple access‐integrated sensing and communication system, which fuses the UAV's echo signal and target position by employing the extended Kalman filter algorithum to achieve high‐precision prediction of the target trajectory.
Dongsheng Han, Zian Wang, Yan Wang
wiley   +1 more source

Multi-Task Deep Learning With Adaptive CSI Filtering for Joint Beamforming and Localization

IEEE Access
Channel state information (CSI) has been frequently utilized as input to deep learning models for beamforming and localization tasks in millimeter-wave systems.
Mikael Ade Krisna Respati, Byung Moo Lee
doaj   +1 more source