Results 51 to 60 of about 1,569 (153)

Frontex and the University: Positivist Dissonance and the Institutionalisation of Border Violence through Research

Antipode, Volume 58, Issue 2, March 2026.
Abstract The paper examines the existing relationships between universities and Frontex, investigating and problematising the intersection between the higher education sector and the violence of the European border regime. We introduce the concept of positivist dissonance to conceptualise these relationships within the wider “industrial‐military ...
Giulia Corgnier, Michele Lancione, Patrícia Nunes Gomes, Devra Waldman   +3 more
wiley   +1 more source

Millisecond‐Switching Dual‐Band/Dual‐Polarization Ka‐Band Wavefront Control Enabled by a Complementary Liquid‐Crystal Metasurface

Advanced Materials Technologies, Volume 11, Issue 4, 19 February 2026.
An LCD‐compatible complementary liquid‐crystal metasurface delivers dual‐band, dual‐polarized Ka‐band wavefront control with millisecond switching via a 10‐µm LC gap. Interlaced patch/slot pairs enable independent phase tuning at 28 and 38 GHz, while strategic 45° slot rotation suppresses parasitic resonances. Measurements on a 160 × 160‐cell prototype
Daehyeon Kim, Donggeun An, Hyunjae Shin, Youngno Youn, Wonbin Hong   +4 more
wiley   +1 more source

General space-time clutter model for multi-channel airborne radar

The Journal of Engineering, 2019
Ground clutter of looking-down airborne radar is spread in Doppler because of the platform motion, and thus the interested moving targets may be masked by the ground clutter.
Li Xinzhe, Xie Wenchong, Wang Yongliang, Ma Jie   +3 more
doaj   +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

Regularised Hyper Parameter Bi Level Optimisation With Continual Learning Based Deep Neural Network for Beamforming in Ultra‐Wide Band System

IET Communications, Volume 20, Issue 1, January/December 2026.
This research proposes a Regularised Hyperparameter Bilevel Optimisation with Continual Learning‐based Deep Neural Network (RHBO‐CLDNN) for beamforming in an Ultra‐Wide Band (UWB) system. The RHBO ensures the hyperparameter efficiency at both upper and lower levels, which allows DNN to fine‐tune the unique characteristics of the UWB system, which leads
Pradeep Kumar Siddanna, Bidare Divakarachari Parameshachari, Dharmanna Shivappa Lamani   +2 more
wiley   +1 more source

A MIMO-SAR Tomography Algorithm Based on Fully-Polarimetric Data

Sensors, 2019
A fully-polarimetric unitary multiple signal classification (UMUSIC) tomography algorithm is proposed, which can be used for acquiring high-resolution three-dimensional (3D) imagery, in a polarimetric multiple-input multiple-output synthetic aperture ...
Lingyu Kong, Xiaojian Xu
doaj   +1 more source

Computationally Efficient Deep Learning Inference for High‐Rate Beamforming in Millimeter‐Wave Internet of Vehicles

IET Communications, Volume 20, Issue 1, January/December 2026.
ABSTRACT Millimeter‐wave (mmWave) Internet‐of‐Vehicles (IoV) communications rely on large antenna arrays to combat severe path loss and to provide high beamforming gains. However, practical vehicular deployments often adopt analog or hybrid beamforming with constant‐modulus constraints, leading to a highly non‐convex joint beamforming design problem ...
Haowen Zheng, Zihan Li, Jianxin Dai, Haifeng Tang, Xinyi Hui   +4 more
wiley   +1 more source

Resource allocation of distributed MIMO radar based on the hybrid action space reinforcement learning

Scientific Reports
The distributed multiple-input multiple-output (MIMO) radar system exhibits superior target localization capability by jointly processing target information from multiple radars under different observation angles.
Jin Zhu, Wenxu Liu, Feifei Lyu, Siwei Li, Tianyang Zhang   +4 more
doaj   +1 more source

FDA‐MIMO Range and Angle Estimation Based on Hybrid Tensor Ring and CP Decomposition

Electronics Letters, Volume 62, Issue 1, January/December 2026.
The graphical abstract illustrates the RMSE performance of range and angle estimation versus SNR for different array configurations. The proposed method consistently achieves lower estimation error than existing approaches and closely matches the Cramér‐Rao bound across the entire SNR range, demonstrating its superior accuracy.
Junyuan Yue, Yunxiu Yang, Maoyuan Feng, Qin Shu   +3 more
wiley   +1 more source

Frequency Diverse Array MIMO Radar Adaptive Beamforming with Range-Dependent Interference Suppression in Target Localization

International Journal of Antennas and Propagation, 2015
Conventional multiple-input and multiple-output (MIMO) radar is a flexible technique which enjoys the advantages of phased-array radar without sacrificing its main advantages.
Kuandong Gao, Huaizong Shao, Jingye Cai, Hui Chen, Wen-Qin Wang   +4 more
doaj   +1 more source