Results 11 to 20 of about 1,209 (97)

Acquisition Time in Laser Inter-Satellite Link Under Satellite Vibrations

IEEE Photonics Journal, 2023
Pointing, acquisition, and tracking (PAT) is a major technical challenge of laser inter-satellite links (ISLs). For the fast establishment of laser link and the maximization of communication time, it is of importance to minimize the acquisition time ...
Kwanyong Lee, Vuong Mai, Hoon Kim
doaj   +1 more source

Dynamic Network Formation for FSO Satellite Communication

Applied Sciences, 2022
Satellite network optimization is essential, particularly since the cost of manufacturing, launching and maintaining each satellite is significant. Moreover, classical communication optimization methods, such as Minimal Spanning Tree, cannot be applied ...
Revital Marbel, Roi Yozevitch, Tal Grinshpoun, Boaz Ben-Moshe   +3 more
doaj   +1 more source

Latency Versus Transmission Power Trade-Off in Free-Space Optical (FSO) Satellite Networks With Multiple Inter-Continental Connections

IEEE Open Journal of the Communications Society, 2023
In free-space optical satellite networks (FSOSNs), satellites connected via laser inter-satellite links (LISLs), latency is a critical factor, especially for long-distance inter-continental connections.
Jintao Liang, Aizaz U. Chaudhry, John W. Chinneck, Halim Yanikomeroglu, Gunes Karabulut Kurt, Peng Hu, Khaled Ahmed, Stephane Martel   +7 more
doaj   +1 more source

Multicarrier Multiplexing Continuous-Variable Quantum Key Distribution at Terahertz Bands Under Indoor Environment and in Inter-Satellite Links Communication

IEEE Photonics Journal, 2021
We propose a continuous-variable quantum key distribution (CVQKD) scheme at terahertz (THz) bands based on multicarrier multiplexing (MCM) technology. In this scheme, multiple Gaussian modulated subcarriers are coupled to transmit multipath superposed ...
Chengji Liu, Changhua Zhu, Xiao Liu, Min Nie, Hong Yang, Changxing Pei   +5 more
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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, A. Zhao, C. L. Ryder, L. J. Wilcox, L. J. Wilcox   +4 more
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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, A. J. Dietz, C. Kuenzer, C. Kuenzer   +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, Chao Wang, Zou Zhou, Zhao Pi, Dongyan Huang   +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, Liangliang Zhang, Huilong Fan   +2 more
doaj   +1 more source

Performance analysis of a multi-format compatible all-optical data access method for satellite backbone-networks

Advanced Optical Technologies
Optical 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
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Comprehensive Optical Inter-Satellite Communication Model for Low Earth Orbit Constellations: Analyzing Transmission Power Requirements

Photonics
Free-space optical communications have emerged as a powerful solution for inter-satellite links, playing a crucial role in next-generation satellite networks.
Michail Gioulis, Thomas Kamalakis, Dimitris Alexandropoulos   +2 more
doaj   +1 more source