Results 11 to 20 of about 12,722 (205)
Satellite Swarm-Based Antenna Arrays for 6G Direct-to-Cell Connectivity
IEEE Access, 2023 Direct connectivity in L/S frequency bands between satellites and common mobile terrestrial user equipment (UE), such as smartphones, is an essential feature for future 6G non-terrestrial networks.
Diego Tuzi +2 more
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Remote Sensing, 2022 Studies on magnetic disturbances in ultralow frequency ranges related to earthquakes observed by satellites are still limited. Based on Swarm satellites, this paper proposes a new analysis method to investigate pre-earthquake magnetic disturbances by ...
Xin-Yan Ouyang +4 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2022 Ionospheric anomalies through satellites can provide useful information about forthcoming earthquakes (EQs) over the epicentral regions. In this paper, we investigated seismo-ionospheric anomalies associated with the Mw 6.5 Sumatra earthquake that ...
Abdul Qadeer Khan +5 more
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Time-variable gravity fields and ocean mass change from 37 months of kinematic Swarm orbits [PDF]
Solid Earth, 2018 Measuring the spatiotemporal variation of ocean mass allows for partitioning of volumetric sea level change, sampled by radar altimeters, into mass-driven and steric parts.
C. Lück +3 more
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Satellite Swarms for Narrow Beamwidth Applications
2023 IEEE 34th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2023 Satellite swarms have recently gained attention in the space industry due to their ability to provide extremely narrow beamwidths at a lower cost than single satellite systems. This paper proposes a concept for a satellite swarm using a distributed subarray configuration based on a 2D normal probability distribution.
Vásquez-Peralvo, Juan A. +3 more
openaire +2 more sources
Sensors, 2022 Low Earth Orbit (LEO) satellites can be used for remote sensing and gravity field recovery, while precise orbit determination (POD) is vital for LEO satellite applications.
Peng Luo, Shuanggen Jin, Qiqi Shi
doaj +1 more source
Ionospheric Turbulence: A Challenge for GPS Loss of Lock Understanding
Space Weather, 2022 Ionospheric irregularities may affect electromagnetic signals propagating through the ionosphere and consequently contribute to the malfunctioning of the Global Navigation Satellite Systems hindering their accuracy and reliability.
P. De Michelis +8 more
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A novel geomagnetic satellite constellation: Science and applications
Earth and Planetary Physics, 2023 The European Space Agency (ESA)’s Swarm constellation of a trio of geomagnetic survey satellites in nearly circular polar orbits at altitude about \begin{document}$500$\end{document} km was launched on 22 November 2013 and has been mapping the Earth’s ...
Keke Zhang
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Wavelike patterns in precessing elliptical rings for swarming systems [PDF]
, 2017 A continuum model for a swarm of devices is investigated with the devices moving along precessing elliptical Earth-centered orbits. Wavelike patterns in these precessing elliptical rings with peaks in swarm density are found that can be used to provide ...
McInnes, Colin R., Xu, Ming
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Two‐Dimensional Reconstruction of Ionospheric Plasma Density Variations Using Swarm
Space Weather, 2020 Space weather phenomena such as scintillations of Global Navigation Satellite Systems (GNSS) signals are of increasing importance for aviation, the maritime, and civil engineering industries.
A. Fæhn Follestad +4 more
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