Results 11 to 20 of about 24,669 (252)
Research on distributed beamforming synchronization technology in inter-satellite link system
Measurement + Control, 2022 Limited by satellite load and carrying capacity, it is difficult for inter-satellite link systems to improve information transmission capabilities by increasing power and antenna size like traditional terrestrial communication systems.
Jianyun Chen, Zhang Yonggang, Sili Liu
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Advanced Communications Satellite Systems [PDF]
IEEE Journal on Selected Areas in Communications, 1983 Demand for in-orbit capacity through the use of satellite systems will continue throughout the next two decades. The potential of the 30/20 GHz frequency band for fixed satellite services will be exploited. However, many technology questions must be answered if the band is to be used commercially because of the high rain fades that can occur at these ...
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Survey on Land Mobile Satellite System: Challenges and Future Research Trends
IEEE Access, 2019 Mobile satellite systems can be characterized as a major solution since they offer mobile communication services to users in different environments and for several significant purposes. In numerous conditions, satellite systems have exclusive competences
Mohammad Abo-Zeed +3 more
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Authentication for Satellite Communication Systems Using Physical Characteristics
IEEE Open Journal of Vehicular Technology, 2023 Satellite communication networks have gained a lot of attention recently as a solution to mitigate the limitations of terrestrial networks such as stability and coverage.
Mohammed Abdrabou, T. Aaron Gulliver
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Massive MIMO LEO Satellite Communications System
天地一体化信息网络, 2022 Extending massive multiple-input multiple-output (MIMO) technique to low earth orbit (LEO) satellite communication systems enables satellites to implement fl exible beamforming, which can make full use of the spatial degrees of freedom of massive MIMO ...
Kexin LI, Li YOU, Xiqi GAO
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Aerospace, 2022 In the past few years, non-geostationary orbit (NGSO) satellite communication constellations have regained popularity due to their conspicuous advantages.
Haojie Zhang, Di Ren, Fanghua Jiang
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InfrastructuresLarge-scale man-made linear structures like high-speed railway lines have become increasingly important in modern life as a faster and more comfortable transportation option.
Gokhan Kizilirmak, Ziyadin Cakir
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Early risk stratification may support clinical decision‐making in spontaneous intracerebral hemorrhage (ICH). We aimed to develop and internally validate HAGIV, a score integrating frequency of imaging markers (FIM), a time‐adjusted non‐contrast computed tomography (CT) metric of hematoma expansion, with established predictors for 90‐
Lei Song +10 more
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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
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Applied Sciences, 2022 The satellite-to-ground communication system is a significant part of future space communication networks. The free-space optical (FSO) communication technique is a prospective solution for satellite-to-ground communication.
Yucong Gu +5 more
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