Results 21 to 30 of about 8,154 (256)
A Review on Inter-Satellite Links Free Space Optical Communication [PDF]
Indian Journal of Science and Technology, 2020 Objectives: The need for constricting, lightweight, low-power electronics-aggravated by the thriving demand for large data flow rate and bandwidth is urging the use of optical technologies in defense and space. Free space optical (FSO) communication links have promising eminence over microwave communication links with high speed, low weight, and ...
Gayatri Tiwari +1 more
openaire +2 more sources
How well do the CMIP6 models simulate dust aerosols? [PDF]
Atmospheric Chemistry and Physics, 2022 Mineral dust impacts key processes in the Earth system, including the radiation budget, clouds, and nutrient cycles. We evaluate dust aerosols in 16 models participating in the sixth phase of the Coupled Model Intercomparison Project (CMIP6) against ...
A. Zhao +4 more
doaj +1 more source
Seasonal evolution of Antarctic supraglacial lakes in 2015–2021 and links to environmental controls [PDF]
The Cryosphere, 2021 Supraglacial meltwater accumulation on ice shelves may have important implications for future sea level rise. Despite recent progress in the understanding of Antarctic surface hydrology, potential influences on ice shelf stability as well as links to ...
M. C. Dirscherl +3 more
doaj +1 more source
LEO laser microwave hybrid inter-satellite routing strategy based on modified Q-routing algorithm
EURASIP Journal on Wireless Communications and Networking, 2022 Low earth orbit (LEO) satellite communication networks require huge load capacity and information processing speed to carry global communication traffic. Inter-satellite links and the on-board processing are the key technologies to achieve this goal, but
Fei Zheng +4 more
doaj +1 more source
An Enhanced Multi-Constraint Optimization Algorithm for Efficient Network Topology Generation
Mathematics, 2023 In order to address a problem in the research related to the low stability and communication efficiency issues in the generation of optical communication constellation network topology, there is a critical component for sensing the interaction among ...
Shangpeng Wang +2 more
doaj +1 more source
Load Balancing in Non-Terrestrial Networks Using Free Space Optical Inter-satellite Links [PDF]
ICC 2026 - IEEE International Conference on CommunicationsNon-terrestrial networks (NTNs) increasingly rely on non-geostationary (NGSO) constellations that combine radio frequency (RF) feeder links (FLs) with free space optical (FSO) inter-satellite links (ISLs).
Abid Afridi +4 more
semanticscholar +1 more source
Four years operations of Inter-satellite and SpaceGround Optical links [PDF]
, 2018 During the past four years, the laser communication terminal on board of Alphasat GEO-stationary satellite has achieved the successful execution of more than 1300 optical links which implies more than 24.000 tasks for the planning system. This laser terminal in combination with a Ka-Band system constitutes the TDP1 technology demonstrator ...
Pimentel, Patricia +11 more
openaire +1 more source
Advanced Optical TechnologiesOptical inter-satellite links are a promising technology for constructing satellite backbone networks, owing to their high data transmission capacity and lightweight terminals.
Xinning Huang, Yuerong Shen, Daming Song
doaj +1 more source
Ferroelectricity in Antiferromagnetic Wurtzite Nitrides
Advanced Functional Materials, EarlyView.We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa +3 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou +6 more
wiley +1 more source