Results 11 to 20 of about 3,008 (290)

Research on hierarchical and sub‐area network control technology of LEO giant constellation

IET Communications
The low‐earth‐orbit (LEO) telecommunication constellation network is foreseen as a merging interconnection method for future sixth‐generation (6G) systems.
Ci He, Yasheng Zhang, Yuejun Yu, Cong Li
doaj   +2 more sources

Analysis on BDS-3 Autonomous Navigation Performance Based on the LEO Constellation and Regional Stations

Remote Sensing, 2023
The global navigation satellite system (GNSS) is developing rapidly, and the related market applications and scientific research are increasing. Studies based on large low Earth orbit (LEO) satellite constellations have become research hotspots.
Baopeng Xu, Xing Su, Zhimin Liu, Mudan Su, Jianhui Cui, Qiang Li, Yan Xu, Zeyu Ma, Tao Geng   +8 more
doaj   +2 more sources

Dynamic beam shut-off algorithm for LEO satellite constellation [PDF]

Tongxin xuebao, 2020
Aiming at the problems of the relatively dense coverage of the satellites in the space segment of the low earth orbit (LEO) multibeam satellite constellation network,which resulted in relatively dense areas in some regions,causing severe inter-beam ...
Shuaijun LIU, Yuemei HU, Chunshi FAN, Teng LING, Lixiang LIU   +4 more
doaj   +4 more sources

Characterization of Mega-Constellation Links for LEO Missions With Applications to EO and ISS Use Cases [PDF]

IEEE Access, 2023
Satellite missions demand ever greater connectivity, especially in the LEO regime. In this paper, we introduce the new mega-constellation services in space paradigm: we show that mega-constellations, deployed to offer innovative services to Earth’ ...
Gabriel Maiolini Capez, Mauricio A. Caceres, Roberto Armellin, Chris P. Bridges, Stefan Frey, Roberto Garello, Pier Bargellini   +6 more
doaj   +2 more sources

GaliLEO: A Simulation Tool for LEO Satellite Constellations [PDF]

SIMULATION, 2002
The authors present GaliLEO, a simulator for the transmission of connection-oriented traffic over a constellation of LEO/MEO (low/medium earth orbit) satellites. Its scope is limited to the satellites and the stations accessing them, without any modelling of the terrestrial network, but inside this scope the goal is to study the performance of ...
Potorti' F., Franck L.
openaire   +5 more sources

Satellite-enabled LTE systems in LEO constellations [PDF]

2017 IEEE International Conference on Communications Workshops (ICC Workshops), 2017
LTE-based satellite systems in LEO constellations are a promising solution for extending broadband coverage to areas not connected to a terrestrial infrastructure. However, the large delays and Doppler shifts over the satellite channel pose severe technical challenges to a traditional LTE system.
Alessandro Guidotti, Alessandro Vanelli-Coralli, Màrius Caus, Joan Bas, Giulio Colavolpe, Tommaso Foggi, Stefano Cioni, Andrea Modenini, Daniele Tarchi   +8 more
openaire   +4 more sources

Modelica-Based Modeling on LEO Satellite Constellation

, 2021
The new generation of LEO (Low Earth Orbit) communication satellite constellations have the advantages of low latency, strong signals, and global coverage. In order to achieve global coverage, the LEO satellite constellations are often very large, with a
Chan, Liu, Qu Yan, Chen Liping, Yikai, Qian, Qian Yikai, Zhou Fanli, Liping, Chen, Liu Chan, Fanli, Zhou, Yan, Qu   +9 more
core   +1 more source

Cross-Domain Fusion Constellation Design of Communication, Navigation and Remote Sensing

Applied Sciences, 2023
Low earth orbit (LEO) mega-constellations have once again triggered a wave of space-based system construction. On the one hand, LEO communication, LEO navigation, LEO remote sensing constellations and so on are proposed.
Junxiang Qin, Xuan Li, Xiaotian Ma, Xiye Guo, Jun Yang   +4 more
doaj   +1 more source

Physical Layer Authentication for LEO Satellite Constellations

2022 IEEE Wireless Communications and Networking Conference (WCNC), 2022
Physical layer authentication (PLA) is the process of claiming identity of a node based on its physical layer characteristics such as channel fading or hardware imperfections. In this work, we propose a novel PLA method for the inter-satellite communication links (ISLs) of the LEO satellites.
Ozan Alp Topal, Gunes Karabulut-Kurt
openaire   +3 more sources

Developing and experimenting with LEO satellite constellations in OMNeT++

CoRR, 2021
In this paper, we present our work in designing and implementing a LEO satellite constellation simulation model1 within OMNeT++ and INET, which is validated by comparing the results with existing work. Our model builds upon the fundamentals of the Open Source Satellite Simulator (OS$^3$), which was ported to INET 4.3.
Aiden Valentine, George Parisis
openaire   +2 more sources