Results 21 to 30 of about 241,015 (255)
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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Remote Sensing, 2023 Swarm electron density (Ne) observations from the Langmuir probe (LP) can detect ionospheric disturbances at the altitude of a satellite. Along-track satellite observations provide a large number of very short observations of different places in the ...
Wojciech Jarmołowski +9 more
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Distributed Downlink Precoding and Equalization in Satellite Swarms
CoRR, 2022 In this paper, we propose a novel approach for downlink transmission from a satellite swarm towards a ground station (GS). These swarms have the benefit of much higher spatial separation in the transmit antennas than traditional satellites with antenna arrays, promising a massive increase in spectral efficiency.
Maik Röper +4 more
openaire +2 more sources
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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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
doaj +1 more source
Electrostatic Force for Swarm Navigation and Reconfiguration [PDF]
, 2009 In this work the concept of a swarm of satellites controlled by a hybrid thrusting electrostatic actuation system is assessed. On one side the propulsion system is investigated.
Theil, Stephan +3 more
core +1 more source
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
doaj +1 more source
Remote Sensing, 2022 Since the appearance and evolution of earthquake ionospheric precursors are expected to show a nonlinear and complex behaviour, the use of nonlinear predictor models seems more appropriate.
Mehdi Akhoondzadeh +3 more
doaj +1 more source
Lattice Formation in Space for a Swarm of Pico Satellites [PDF]
, 2008 We present a distributed control strategy that lets a swarm of satellites autonomously form a lattice in orbit around a planet. The system, based on the artificial potential field approach, proposes a novel way to split the artificial field in two main terms: a global artificial field that gathers the satellites around a predefined meeting point, and a
Carlo Pinciroli +6 more
openaire +4 more sources