Results 61 to 70 of about 67,113 (245)

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

open access: yesAdvanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi   +3 more
wiley   +1 more source

Effect of Optical Signal Beam Shift on the Performance of Satellite Chaos Laser Safety Communication System under Space-Integrated-Ground Information Network

open access: yes天地一体化信息网络, 2021
The eff ect of beam center shift on the performance of satellite chaos laser safety communication system in spaceintegrated-ground information network was studied, the bit error rate (BER) formulae with external and internal mismatch caused by beam ...
Mi LI   +5 more
doaj   +2 more sources

High-Precision Joint Ranging Method Based on Pseudo-Random Code and Single-Tone Signal

open access: yesIEEE Photonics Journal
In this paper, a laser joint ranging method, which integrates the pseudo-random code with the single-tone signal, is proposed for realizing high accuracy and precision.
Chaoyang Li   +4 more
doaj   +1 more source

Satellite vibration effects on communication quality of OISN system

open access: yesOpen Engineering, 2022
Over space optical communications are considered as the critical technology for high-bandwidth, high-speed, and large-capacity communications. Indeed, the laser wavelength’s narrow beam divergence requires a precise beam pointing at both ends of the ...
Madhag Aqeel, Dhaam Haidar Zaeer
doaj   +1 more source

Current optical technologies for wireless access [PDF]

open access: yes, 2009
The objective of this paper is to describe recent activities and investigations on free-space optics (FSO) or optical wireless and the excellent results achieved within SatNEx an EU-framework 6th programme and IC 0802 a COST action.
Awan, Muhammad   +8 more
core  

Free Space Optical Link Utilizing a Modulated Retro-Reflector Intended for Planetary Duplex Communication Links Between an Orbiter and Surface Unit [PDF]

open access: yes
Presented are simulation and experimental results that provide duplex optical-free space communication links with minimal power and pointing requirements by using a modulated retro-reflector (MRR) for planetary communications.
Booth S.   +5 more
core   +2 more sources

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke   +3 more
wiley   +1 more source

A Review on All-Optical Switching in Intersatellite Laser Communication

open access: yesAdvanced Devices & Instrumentation
As intersatellite laser communication progresses from its early in-orbit experiments to a fully operational network, the node access scheme is becoming increasingly intricate.
Feng Li   +8 more
doaj   +1 more source

Vision‐Augmented Wearable Interfaces: Bioinspired Approaches for Realistic AI‐Human‐Machine Interaction

open access: yesAdvanced Materials Technologies, EarlyView.
This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee   +4 more
wiley   +1 more source

Mitigating radiation damage of single photon detectors for space applications

open access: yes, 2017
Single-photon detectors in space must retain useful performance characteristics despite being bombarded with sub-atomic particles. Mitigating the effects of this space radiation is vital to enabling new space applications which require high-fidelity ...
Anisimova, Elena   +9 more
core   +1 more source

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