Results 61 to 70 of about 23,913 (207)
Frozen Differential Scattering in Reconfigurable Complex Media
Laser &Photonics Reviews, EarlyView.A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley +1 more source
IET Radar, Sonar & Navigation, 2022 Frequency diverse array‐multiple input multiple output (FDA‐MIMO) radar not only has the advantage of waveform diversity but also can realise azimuth‐range correlation map, so it can realise high precision azimuth‐range joint estimation and has the ...
Hongzhen Wang +3 more
doaj +1 more source
Coexistence Analysis between Radar and Cellular System in LoS Channel
, 2016 Sharing spectrum with incumbents such as radar systems is an attractive solution for cellular operators in order to meet the ever growing bandwidth requirements and ease the spectrum crunch problem.
Abdelhadi, Ahmed +2 more
core +1 more source
Target Estimation in Colocated MIMO Radar via Matrix Completion [PDF]
, 2013 We consider a colocated MIMO radar scenario, in which the receive antennas forward their measurements to a fusion center. Based on the received data, the fusion center formulates a matrix which is then used for target parameter estimation.
Bajwa, Waheed U. +2 more
core +1 more source
Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows
IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li +7 more
wiley +1 more source
Forward-Looking Super-Resolution Imaging of MIMO Radar via Sparse and Double Low-Rank Constraints
Remote Sensing, 2023 Multiple-input multiple-output (MIMO) radar uses waveform diversity technology to form a virtual aperture to improve the azimuth resolution of forward-looking imaging.
Junkui Tang +4 more
doaj +1 more source
Massive MIMO is a Reality -- What is Next? Five Promising Research Directions for Antenna Arrays
, 2019 Massive MIMO (multiple-input multiple-output) is no longer a "wild" or "promising" concept for future cellular networks - in 2018 it became a reality.
Björnson, Emil +4 more
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 +15 more
wiley +1 more source
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