Results 11 to 20 of about 82,109 (188)
LEO Satellite Constellation for Internet of Things
IEEE Access, 2017 Internet of Things (IoT) is one of the evolutionary directions of the Internet. This paper focuses on the low earth orbit (LEO) satellite constellation-based IoT services for their irreplaceable functions.
Zhicheng Qu +3 more
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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
doaj +2 more sources
A Deeper Look at Leo IV: Star Formation History and Extended Structure [PDF]
, 2009 We present MMT/Megacam imaging of the Leo~IV dwarf galaxy in order to investigate its structure and star formation history, and to search for signs of association with the recently discovered Leo~V satellite. Based on parameterized fits, we find that Leo~
Adelman-McCarthy +39 more
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Multi-LEO Satellite Stereo Winds
Remote Sensing, 2023 The stereo-winds method follows trackable atmospheric cloud features from multiple viewing perspectives over multiple times, generally involving multiple satellite platforms. Multi-temporal observations provide information about the wind velocity and the observed parallax between viewing perspectives provides information about the height.
James L. Carr +3 more
openaire +2 more sources
Applied Sciences, 2022 Low Earth orbit (LEO) satellites that can be used as computing nodes are an important part of future communication networks. However, growing user demands, scarce channel resources and unstable satellite–ground links result in the challenge to design an ...
Juan Wang +3 more
doaj +1 more source
Exploring Halo Substructure with Giant Stars. X. Extended Dark Matter or Tidal Disruption?: The Case for the Leo I Dwarf Spheroidal Galaxy [PDF]
, 2007 We present a wide-field (4.5 deg^2) photometric and spectroscopic survey of the Leo I dwarf spheroidal (dSph) galaxy to explore its extended morphology and dynamics.
Cooper, Michael C. +9 more
core +1 more source
Traffic simulation of broadband LEO constellation satellite communication system
Dianzi Jishu Yingyong, 2019 Due to the rapid development of small satellite technology，and the advantages of low earth orbit satellite(LEO) with low delay and low propagation loss as compared with the traditional geosynchronous orbit satellite(GEO), the broadband LEO constellation ...
Xu Jun, Lu Wei, Zhang Gengxin
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A Collaborative Inference Algorithm in Low-Earth-Orbit Satellite Network for Unmanned Aerial Vehicle
Drones, 2023 In recent years, the low-Earth-orbit (LEO) satellite network has achieved considerable development. Moreover, it is necessary to introduce edge computing into LEO networks, which can provide high-quality services, such as worldwide seamless low-delay ...
Zhengqian Xu +5 more
doaj +1 more source
LEO satellites: "photobombing astronomy images"
, 2023 Scientific poster that highlights the problem with low earth orbit (LEO) satellites and their photometric reflective properties.
Longa-Peña, P. +3 more
openaire +4 more sources
A Satellite Handover Strategy Based on the Potential Game in LEO Satellite Networks
IEEE Access, 2019 In a low earth orbit (LEO) satellite network, handover management across satellite spot beams needs to be addressed to decrease handover times while using network resources efficiently since the speed of LEO satellites is much higher than that of mobile ...
Yang Wu +3 more
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