Results 61 to 70 of about 191,135 (314)

Interference estimation in an aeronautical ad hoc network [PDF]

open access: yes, 2011
Recent research have considered aeronautical ad hoc networks as a possible mean for future aeronautical communications. By introducing inter- aircraft links, they are supposed to become an alternative to existing solutions based on direct air- ground or ...
Besse, Frédéric   +3 more
core   +3 more sources

Region‐to‐Region Unidirectional Connection In Vitro Brain Model for Studying Directional Propagation of Neuropathologies

open access: yesAdvanced Functional Materials, EarlyView.
A unidirectional cerebral organoid–organoid neural circuit is established using a microfluidic platform, enabling controlled directional propagation of electrical signals, neuroinflammatory cues, and neurodegenerative disease–related proteins between spatially separated organoids.
Kyeong Seob Hwang   +9 more
wiley   +1 more source

Adaptive routing strategy in multi layer satellite communication networks

open access: yesTongxin xuebao, 2006
The characteristics of multi-coverage of multilayer satellite networks make sure of good validity and reliability of the space-based networks.Walker delta type constellation guarantees permanent inter satellite links between satellites in the same layer ...
LI Hui, GU Xue-mai
doaj   +2 more sources

Competitive Assessments for HAP Delivery of Mobile Services in Emerging Countries

open access: yes, 2012
In recent years, network deployment based on High Altitude Platforms (HAPs) has gained momentum through several initiatives where air vehicles and telecommunications payloads have been adapted and refined, resulting in more efficient and less expensive ...
Gourhant, Yvon   +2 more
core   +2 more sources

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

open access: yesAdvanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai   +6 more
wiley   +1 more source

An Integrity Monitoring Method for Navigation Satellites Based on Multi-Source Observation Links

open access: yesRemote Sensing
The BeiDou-3 navigation satellite system (BDS-3) has officially provided positioning, navigation, and timing (PNT) services to global users since 31 July 2020.
Jie Xin, Dongxia Wang, Kai Li
doaj   +1 more source

Terabyte capacity-enabled (10 x 400 Gbps) Is-OWC system for long-haul communication by incorporating dual polarization quadrature phase shift key and mode division multiplexing scheme.

open access: yesPLoS ONE, 2022
Inter-satellite optical wireless communication (Is-OWC) links can become promising solutions to realize the next-generation high-speed communication services.
Sushank Chaudhary   +5 more
doaj   +1 more source

Laser Inter-Satellite Links in a Starlink Constellation

open access: yes, 2021
Laser inter-satellite links (LISLs) are envisioned between satellites in upcoming satellite constellations, such as Phase I of SpaceX's Starlink. Within a constellation, satellites can establish LISLs with other satellites in the same orbital plane or in different orbital planes.
Chaudhry, Aizaz U., Yanikomeroglu, Halim
openaire   +2 more sources

Impacts of inter-satellite links on the ECOM model performance for BDS-3 MEO satellites

open access: yesSatellite Navigation
Inter-satellite link (ISL) plays an essential role in current and future Global Navigation Satellite System (GNSS). In this study, we investigate the impact of ISL observations on precise orbit determination for BeiDou-3 Navigation Satellite System (BDS ...
Chao Yang   +4 more
semanticscholar   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Home - About - Disclaimer - Privacy