Results 11 to 20 of about 4,358,865 (294)
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, Fujian Ma, Hongmin Zhang
exaly +2 more sources
Inter-Plane Satellite Matching in Dense LEO Constellations [PDF]
2019 IEEE Global Communications Conference (GLOBECOM), 2019 Dense constellations of Low Earth Orbit (LEO) small satellites are envisioned to make extensive use of the inter-satellite link (ISL). Within the same orbital plane, the inter-satellite distances are preserved and the links are rather stable. In contrast, the relative motion between planes makes the inter-plane ISL challenging.
Beatriz Soret +2 more
openaire +4 more sources
IEEE Open Journal of the Communications SocietyThe rapid expansion of the Internet of Things (IoT) highlights the need for ubiquitous connectivity, especially in remote and underserved areas. As a cornerstone of current 5th Generation (5G) cellular IoT networks, Narrowband IoT (NB-IoT) supports ...
Timo Kellermann +2 more
doaj +2 more sources
Hierarchical Resource Management for Mega-LEO Satellite Constellation. [PDF]
Sensors (Basel)The mega-low Earth orbit (LEO) satellite constellation is pivotal for the future of satellite Internet and 6G networks. In the mega-LEO satellite constellation system (MLSCS), which is the spatial distribution of satellites, global users, and their services, along with the utilization of global spectrum resources, significantly impacts resource ...
Gou L +6 more
europepmc +4 more sources
One-Shot Federated Learning for LEO Constellations that Reduces Convergence Time from Days to 90 Minutes [PDF]
International Conference on Mobile Data Management, 2023 A Low Earth orbit (LEO) satellite constellation consists of a large number of small satellites traveling in space with high mobility and collecting vast amounts of mobility data such as cloud movement for weather forecast, large herds of animals ...
Mohamed Elmahallawy, Tie Luo
semanticscholar +1 more source
Secure and Efficient Federated Learning in LEO Constellations Using Decentralized Key Generation and On-Orbit Model Aggregation [PDF]
Global Communications Conference, 2023 Satellite technologies have advanced drastically in recent years, leading to a heated interest in launching small satellites into low Earth orbit (LEOs) to collect massive data such as satellite imagery. Downloading these data to a ground station (GS) to
Mohamed Elmahallawy +2 more
semanticscholar +1 more source
FedGSM: Efficient Federated Learning for LEO Constellations with Gradient Staleness Mitigation [PDF]
International Workshop on Signal Processing Advances in Wireless Communications, 2023 Recent advancements in space technology have equipped low Earth Orbit (LEO) satellites with the capability to perform complex functions and run AI applications. Federated Learning (FL) on LEO satellites enables collaborative training of a global ML model
Lin Wu, Jingjing Zhang
semanticscholar +1 more source
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 +6 more
doaj +1 more source
Remote Sensing, 2021 The development of small-satellite technologies allows the low Earth orbit intersatellite link (LEO-LEO) occultation method to observe the Earth’s atmosphere with global coverage and acceptable costs using electromagnetic signals, in which the L/X/K/M ...
Congliang Liu +10 more
doaj +1 more source
IET Radar, Sonar & Navigation, 2022 The use of low earth orbit (LEO) satellites to enhance the performance of global navigation satellite system navigation and positioning services has become a popular research topic.
Jing Liu +5 more
doaj +1 more source