Results 11 to 20 of about 44,451 (275)
Performance Analysis of DPSK Optical Communication for LEO-to-Ground Relay Link Via a GEO Satellite
Journal of Astronomy and Space Sciences, 2020 Satellite optical communication has gained significant attention owing to its many quality features (e.g., a larger bandwidth, license free spectrum, higher data rate, and better security) compared to satellite microwave communication.
Hyung-Chul Lim +5 more
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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
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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 +3 more
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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 +7 more
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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 +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 +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 +3 more
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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
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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
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Relativistic Modelling for Accurate Time Transfer via Optical Inter-Satellite Links [PDF]
Aerotecnica Missili & Spazio, 2021 AbstractThe DLR Institute for Communication and Navigation is currently working on a new GNSS architecture that enables accurate autonomous inter-satellite synchronization at picosecond-level. Synchronization is achieved via time transfer techniques enabled by optical inter-satellite links (OISLs), paving the way for a system in which space (orbits ...
Dassie, Manuele, Giorgi, Gabriele
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