Results 31 to 40 of about 868,877 (296)
Sparse Satellite Constellation Design for Global and Regional Direct-to-Satellite IoT Services
IEEE Transactions on Aerospace and Electronic Systems, 2022 In this article, we introduce and design sparse constellations for direct-to-satellite Internet of Things (DtS-IoT). DtS-IoT does not require a ground infrastructure, because the devices are directly connected to low earth orbit satellites acting as ...
Gabriel Maiolini Capez +3 more
semanticscholar +1 more source
Design of Mega-Constellations for Global Uniform Coverage with Inter-Satellite Links
Aerospace, 2022 Constellation configuration design is a prerequisite and critical step in the construction of a mega-constellation system in low Earth orbit. However, the huge number of satellites and the intricate changes in relative positions among them make the ...
Lu Jia +3 more
doaj +1 more source
IEEE Access, 2022 This paper presents a robust system for mitigating adversarial and natural GPS disruptions by presenting: (1) a software-based defense mechanism against spoofing attacks using generative adversarial networks (GANs), The system detects unauthorized or ...
Debashri Roy +5 more
semanticscholar +1 more source
Application Status and Analysis of Starlink Constellation
天地一体化信息网络, 2023 Starlink, asatellite broadband constellation operated by SpaceX, is currently the most influential and promising LEO broadband satellite constellation.With the expansion of the constellation deployment, its high-frequency launch and batch deployment of ...
Yu WANG +6 more
doaj +2 more sources
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingForests are the largest carbon storage and carbon sinks on land and are closely related to global climate change. Using remote sensing images to monitor global deforestation has become the mainstream method, mainly because of their long time-series ...
Zhipan Wang +6 more
doaj +1 more source
A novel design on multi-layer satellite constellation network
上海师范大学学报. 自然科学版, 2016 With the increasing demand of space technology,the traditional single layer satellite constellation network is restricted in the development of future space technology because of its simple structure.For this reason,more and more researchers have carried
LI Lianqiang +4 more
doaj +1 more source
Shortest Path in LEO Satellite Constellation Networks: An Explicit Analytic Approach
IEEE Journal on Selected Areas in CommunicationsThe Shortest Distance Path (SDP) problem is a critical routing issue in communication networks, particularly in satellite networks. Typically, SDP is solved by graph-based iterative algorithms, while an explicit or analytic approach is challenging ...
Quan Chen +5 more
semanticscholar +1 more source
Acta Astronautica, 2019 The idea of providing Internet access from space has made a strong comeback in recent years. After a relatively quiet period following the setbacks suffered by the projects proposed in the ’90s, a new wave of proposals for large constellations of low ...
Iñigo Del Portillo +2 more
semanticscholar +1 more source
IEEE Geoscience and Remote Sensing Magazine, 2021 The global Earth-observing satellite constellation (EOSC) is a major international asset that has developed since 1960 with a dramatic growth in size and complexity in the recent past.
S. Boukabara +5 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar +7 more
wiley +1 more source