Results 21 to 30 of about 1,563 (256)
Integrated Precise Orbit Determination of Multi-GNSS and Large LEO Constellations
Remote Sensing, 2019 Global navigation satellite system (GNSS) orbits are traditionally determined by observation data of ground stations, which usually need even global distribution to ensure adequate observation geometry strength.
Xingxing Li +8 more
doaj +1 more source
天地一体化信息网络, 2020 With the development of the national major project of space-integrated-ground information network including space-based access network and LEO constellation system,it is urgently to be solved how to deal with the routing problem of LEO constellation with
Ci HE +3 more
doaj +2 more sources
Dianxin kexue, 2022 The low earth orbit (LEO) satellite Internet constellation is a hot spot in current global research.And it is highly anticipated that the LEO satellite Internet constellation supports random access to remote sensing satellites and direct on-orbit ...
Xiaoyu CHANG +5 more
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Evaluation of delay tolerant network routing protocols for data streaming through LEO constellation
Egyptian Journal of Remote Sensing and Space Sciences, 2023 In the Era of Mega Low Earth Orbit (LEO) satellite constellation, the efficient networking through Inter-Satellite Links (ISLs) plays a vital role in its mission success.
Hager M. Elhalafawy +4 more
doaj +1 more source
LTE‐based satellite communications in LEO mega‐constellations [PDF]
International Journal of Satellite Communications and Networking, 2018 SummaryThe integration of satellite and terrestrial networks is a promising solution for extending broadband coverage to areas not connected to a terrestrial infrastructure, as also demonstrated by recent commercial and standardisation endeavours. However, the large delays and Doppler shifts over the satellite channel pose severe technical challenges ...
Alessandro Guidotti +7 more
openaire +6 more sources
On-Board Federated Learning for Dense LEO Constellations
ICC 2022 - IEEE International Conference on Communications, 2022 Mega-constellations of small-size Low Earth Orbit (LEO) satellites are currently planned and deployed by various private and public entities. While global connectivity is the main rationale, these constellations also offer the potential to gather immense amounts of data, e.g., for Earth observation. Power and bandwidth constraints together with motives
Nasrin Razmi +3 more
openaire +3 more sources
Integration of Satellites in 5G through LEO Constellations [PDF]
GLOBECOM 2017 - 2017 IEEE Global Communications Conference, 2017 The standardization of 5G systems is entering in its critical phase, with 3GPP that will publish the PHY standard by June 2017. In order to meet the demanding 5G requirements both in terms of large throughput and global connectivity, Satellite Communications provide a valuable resource to extend and complement terrestrial networks.
KODHELI, OLTJON +2 more
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Demand-Aware Flexible Handover Strategy for LEO Constellation
2023 IEEE International Conference on Communications Workshops (ICC Workshops), 2023 peer ...
Tedros Salih Abdu +5 more
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Performance Assessment of Multi-GNSS PPP Ambiguity Resolution with LEO-Augmentation
Remote Sensing, 2023 The fast motion of low Earth orbit (LEO) satellites provides rapid geometric changes in a short time, which can accelerate the initialization of precise point positioning (PPP).
Qin Li +4 more
doaj +1 more source
Exploiting topology awareness for routing in LEO satellite constellations [PDF]
2021 IEEE Global Communications Conference (GLOBECOM), 2021 Low Earth Orbit (LEO) satellite constellations combine great flexibility and global coverage with short propagation delays when compared to satellites deployed in higher orbits. However, the fast movement of the individual satellites makes inter-satellite routing a complex and dynamic problem. In this paper, we investigate the limits of unipath routing
Jonas W. Rabjerg +3 more
openaire +4 more sources