Results 121 to 130 of about 296,490 (359)

Market capture by 30/20 GHz satellite systems. Volume 1: Executive summary [PDF]

open access: yes
Demand for 30/20 GHz satellite systems over the next two decades is projected. Topics include a profile of the communications market, switched, dedicated, and packet transmission modes, deferred and real-time traffic, quality and reliability ...
Gamble, R. B., Saporta, L.
core   +1 more source

Satellite Laser Communication

open access: yes, 2010
We applied Chu and Hogg’s key cloud attenuation results to Italsat observations (9) and cloud water analysis (11) to estimate worldwide laser attenuation for satellite- ground communication links. Section 3 gave worldwide zenith attenuation estimates for 80% availability, 90% availability, and 70% availability.
openaire   +4 more sources

Extending the Range of Sizes of Monodisperse Core‐Shell Hydrogel Capsules from Composite Jet Breakup by Combined Electrical and Mechanical Actuation

open access: yesAdvanced Science, EarlyView.
We present a microfluidic approach combining electrical and mechanical actuation to improve control over liquid jet breakup and droplet formation. By adjusting excitation frequency and applying an electric field, coalescence is reduced and droplet uniformity is enhanced.
Lucas Suire   +3 more
wiley   +1 more source

Multifunctional Chiral Halide Perovskites: Advancing Chiro‐Optics, Chiro‐Optoelectronics, and Spintronics

open access: yesAdvanced Science, EarlyView.
This review spotlights key advances in chiral halide perovskite materials and devices, covering device architectures, fabrication methods, and emerging applications like circularly polarized light functions, neuromorphic computing, and spintronics. It explores structure‐property relationships and chirality transfer mechanisms, discusses challenges in ...
Qi Liu, Hui Ren, Qi Wei, Mingjie Li
wiley   +1 more source

The applications of satellites to communications, navigation and surveillance for aircraft operating over the contiguous United States. Volume 1 - Technical report [PDF]

open access: yes
Satellite applications to aircraft communications, navigation, and surveillance over US including synthesized satellite network and aircraft equipment for air traffic ...
Craigie, J. H.   +3 more
core   +1 more source

High Electrical Conductivity Induced by Surface Confinement Effect in Heterostructured Multifunctional Nanofiber Composite Films for Low‐Reflection Electromagnetic Interference Shielding

open access: yesAdvanced Science, EarlyView.
Spray‐coated PVA‐co‐PE/AgNW/MXene films achieve 60.2 dB EMI shielding (8–20 GHz) with low reflection (R = 0.13) at 5.4 wt.% loading. The 3D conductive network enhances absorption, while the film offers high strength (18.33 MPa), Joule heating, photothermal conversion, flexibility, and flame resistance.
Dechang Tao   +8 more
wiley   +1 more source

Seven Years Experience and Analysis on Corporated-Wide Distance Learning for Engineers Using Satellite Communications [PDF]

open access: bronze, 1999
Kouji Yoshida   +5 more
openalex   +1 more source

An overview of the OmniTRACS: The first operational mobile Ku-band satellite communications [PDF]

open access: yes
The service features of the OmniTRACS system developed by Omninet Communications Services of Los Angeles, California are described. This system is the first operational mobile Ku-band satellite communications system that provides two-way messaging and ...
Salmasi, Allen
core   +1 more source

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