Results 81 to 90 of about 24,252 (205)

Network MIMO with Partial Cooperation between Radar and Cellular Systems

, 2015
To meet the growing spectrum demands, future cellular systems are expected to share the spectrum of other services such as radar. In this paper, we consider a network multiple-input multiple-output (MIMO) with partial cooperation model where radar ...
Abdelhadi, Ahmed, Clancy, T. Charles
core   +1 more source

First Coincident Radar and Optical Observations of a Meteor Radio Afterglow

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract It has been hypothesized that Meteor Radio Afterglows (MRAs) occur due to resonant transition radiation (RTR) where suprathermal electrons emit as they pass through electron density inhomogeneities in a turbulent plasma. Meteor trails are thought to produce suprathermal electrons through anion oxidation, which can be identified through meteor ...
K. S. Obenberger, J. L. Chau, J. Vierinen, D. Vida, L. E. Cordonnier, Z. Balint, M. Clahsen, E. Dao, J. Dowell, J. M. Holmes, R. F. Kelly, D. Kastinen, N. Pfeffer, K. Robinson, G. B. Taylor, J. M. Urco   +15 more
wiley   +1 more source

The Spatially Separated Polarization Sensitive FDA-MIMO Radar: A New Antenna Structure for Unambiguous Parameter Estimation

MATEC Web of Conferences, 2018
Joint DOA-range-polarization estimation with a novel radar system, i.e., spatially separated polarization sensitive random frequency diverse array based on multiple-input multiple-output (SS-PSRFDA-MIMO) radar, is discussed. The proposed array can obtain
Li Binbin, Bai Weixiong, Zhang Qin, Zheng Guimei, Zhang Mingliang, Wan Pengcheng   +5 more
doaj   +1 more source

Spatial Compressive Sensing for MIMO Radar [PDF]

IEEE Transactions on Signal Processing, 2014
We study compressive sensing in the spatial domain to achieve target localization, specifically direction of arrival (DOA), using multiple-input multiple-output (MIMO) radar. A sparse localization framework is proposed for a MIMO array in which transmit and receive elements are placed at random.
Marco Rossi 0001, Alexander M. Haimovich, Yonina C. Eldar   +2 more
openaire   +2 more sources

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

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

An Unambiguous Super-Resolution Algorithm for TDM-MIMO-SAR 3D Imaging Applications on Fast-Moving Platforms

Remote Sensing
Multiple-Input Multiple-Output (MIMO) radar enjoys the advantages of a high degree of freedom and relatively large virtual aperture, so it has various forms of applications in several aspects such as remote sensing, autonomous driving and radar imaging ...
Sheng Guan, Mingming Wang, Xingdong Liang, Yunlong Liu, Yanlei Li   +4 more
doaj   +1 more source

Adaptive channel selection for DOA estimation in MIMO radar

, 2017
We present adaptive strategies for antenna selection for Direction of Arrival (DoA) estimation of a far-field source using TDM MIMO radar with linear arrays. Our treatment is formulated within a general adaptive sensing framework that uses one-step ahead
Brüggenwirth, Stefan, González-Huici, María A., Mateos-Núñez, David, Simoni, Renato   +3 more
core   +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