Results 41 to 50 of about 3,182 (230)

Tailoring Successive Magnetic‐Dielectric Synergy for Enhancing Electromagnetic Absorption in Ultralong Heterostructure Chains Assisted by High Static Magnetic Field

open access: yesAdvanced Science, EarlyView.
This work proposes a high static magnetic field (HSMF) driven dual‐low‐dimension strategy for fabricating magnetic‐dielectric heterostructure (Fe3O4@MoS2) chains with programmable lengths. The constructed successive magnetic‐dielectric synergy, arising from uniaxial anisotropy‐enhanced magnetic response and abundant heterointerfaces that boost ...
Zhuolin Li   +5 more
wiley   +1 more source

Signals Features from Distributed Targets of Autodyne SRR with Simultaneous Pulse Amplitude and Linear Frequency Modulations

open access: yesVìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ, 2017
A mathematical model for signals description of the autodyne short-range radar (ASRR) with the simultaneous pulse amplitude modulation (PAM) and the linear frequency modulation (FM) is considered.
V. Ya. Noskov   +5 more
doaj   +1 more source

Towards a common terminology in radioglaciology

open access: yesAnnals of Glaciology, 2022
Over the past 70 years, many different components of the cryosphere have been imaged with a variety of radar systems using increasingly sophisticated processing techniques.
Rebecca Schlegel   +3 more
doaj   +1 more source

Generating NLFM Radar Waveforms using Variational Autoencoders

open access: yes, 2023
959964The rapid synthesis of radar waveform modulations is key to enabling a radar to react to the environment in order to optimize performance. This paper proposes the use of generative models for radar waveform generation.
Charlish, Alexander Brendan   +1 more
core   +1 more source

Graphene Aerogels With Spherical Pore Structure for Broad Frequency Regulation and Enhanced Low‐Frequency Response

open access: yesAdvanced Science, EarlyView.
A graphene aerogel with a spherical‐pore structure is constructed via microbubble templating. This unique architecture suppresses strain‐induced percolation of conductive networks, enabling dynamic frequency tuning. It also delivers enhanced low‐frequency absorption with an effective absorption bandwidth of 2.56 GHz, covering 91% of the low‐frequency ...
Liang Li   +7 more
wiley   +1 more source

Indoor non-rhythmic human motion classification using a frequency-modulated continuous-wave radar

open access: yesThe Journal of Engineering, 2019
Human motion classification is widely used in intelligent house, surveillance, search and rescue operation, intelligent house, and elder monitoring. In this study, a frequency-modulated continuous-wave radar is utilised to classify non-rhythmic human ...
Yu Zou   +4 more
doaj   +1 more source

Forensic Application of FM-CW and Pulse Radar [PDF]

open access: yesJournal of Environmental & Engineering Geophysics, 2003
Ground-penetrating radar (GPR) technology has supplied vital assistance in criminal investigations. However, law enforcement personnel desire further developments such that the technology is rapidly deployable, and that it provides both a simple user interface and sophisticated target identification.
Koppenjan, S. K.   +3 more
openaire   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

open access: yesAdvanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

Proposal of multiple access FMCW radar for inter-radar interference avoidance

open access: yesThe Journal of Engineering, 2019
Inter-radar interference will be a crucial problem when a number of frequency modulated continuous wave (FMCW) radars are densely deployed in future, since it can cause miss detection and false detection of the target due to wideband interference and ...
Mikihiro Kurosawa   +5 more
doaj   +1 more source

Longitudinal Phenotypic Trajectories in GNAO1‐Related Disorders: Defining Disease Progression and Clinical Profiles

open access: yesAnnals of Neurology, EarlyView.
Objective Pathogenic variants in GNAO1 cause a spectrum of epilepsy, movement disorders, and developmental impairment. Clinical heterogeneity complicates prognosis and therapeutic development. We present the first longitudinal natural history study of GNAO1‐related disorders (GNAO1‐RD) to delineate phenotypic trajectories. Methods Sixty‐six individuals
Jana Domínguez‐Carral   +52 more
wiley   +1 more source

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