Results 11 to 20 of about 26,550 (286)

Research on distributed beamforming synchronization technology in inter-satellite link system

open access: yesMeasurement + 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
doaj   +1 more source

Authentication for Satellite Communication Systems Using Physical Characteristics

open access: yesIEEE 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
doaj   +1 more source

Survey on Land Mobile Satellite System: Challenges and Future Research Trends

open access: yesIEEE 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
doaj   +1 more source

A Beam Search-Based Channel Allocation Method for Interference Mitigation of NGSO Satellites with Multi-Beam Antennas

open access: yesAerospace, 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
doaj   +1 more source

Massive MIMO LEO Satellite Communications System

open access: yes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
doaj   +2 more sources

Always at the forefront of microwave electronics (on the occasion of the 50th anniversary of the "Saturn" Research Institute) [PDF]

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2018
The article is devoted to the scientific and production enterprise "Saturn" - from the moment of creation to the present day. The decisive stages of its development and the scientific and technical results achieved by the team during the 50-year history ...
Glushechenko E. N., Chmil V. M.
doaj   +2 more sources

Modulation Format Identification in a Satellite to Ground Optical Wireless Communication Systems Using a Convolution Neural Network

open access: yesApplied 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
doaj   +1 more source

Application of PS-InSAR and Diagnostic Train Measurement Techniques for Monitoring Subsidence in High-Speed Railway in Konya, Türkiye

open access: yesInfrastructures
Large-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
doaj   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy