Results 151 to 160 of about 28,867 (162)
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Initial results of a survey of equatorial noise emissions observed by the Cluster spacecraft
Planetary and Space Science, 2005Abstract Initial results of a survey of equatorial noise emissions are presented. These plasma wave emissions are observed in the inner magnetosphere close to the geomagnetic equator at frequencies below the local lower hybrid frequency. We use the data recorded by the four Cluster spacecraft during the first 24 months of measurements.
Nemec, Frantisek +5 more
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Physical Review Letters, 2008
We study the plasma turbulence, at scales larger than the ion inertial length scale, downstream of a quasiparallel bow shock using Cluster multispacecraft measurements. We show that turbulence is intermittent and well described by the extended structure function model, which takes into account the spatial inhomogeneity of the cascade rate.
Andris Vaivads +4 more
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We study the plasma turbulence, at scales larger than the ion inertial length scale, downstream of a quasiparallel bow shock using Cluster multispacecraft measurements. We show that turbulence is intermittent and well described by the extended structure function model, which takes into account the spatial inhomogeneity of the cascade rate.
Andris Vaivads +4 more
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Spacecraft Recognition in Co-Located Satellites Cluster Through Optical Measures
IEEE Transactions on Aerospace and Electronic Systems, 2017The optical orbit determination is one of the most important ways for noncooperative object tracking. One of the main problems with noncooperative object tracking is its recognition through different nights. In this study, the conditions that ensure the recognition of a geostationary satellite inside a cluster were assessed through a hard real case ...
Scire, Gioacchino +2 more
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A survey of autonomous cooperation of modules' cluster operations for fractionated spacecraft
International Journal of Space Science and Engineering, 2013Autonomous cooperation is recognised as the key technology to enable modules’ cluster operations of fractionated spacecraft. This paper presents a thorough survey of the technologies that facilitate the desired autonomous cooperation of fractionated spacecraft.
Jing Chu, Eberhard Gill, Jian Guo
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CLUSTER spacecraft observation of a thin current sheet at the Earth’s magnetopause
Advances in Space Research, 2006Abstract On March 30, 2002 within 17 min the four CLUSTER spacecraft crossed the Earth’s high-latitude magnetopause three times. We found that all three magnetopause current sheets are nearly co-planar on the scales of the CLUSTER spacecraft separation.
Markus Fränz +9 more
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Bifurcated Current Sheet Structure in a Quiet Time by Cluster Spacecrafts
Chinese Physics Letters, 2006We analyse the vertical structure of the magnetotail current sheet for two time intervals during which the Cluster spacecrafts crossed the neutral sheet in a quiet time. In the intervals, the current sheet moved slowly, and the value of the AE index was relatively small, about 40–130 nT.
LI Zhong-yuan +3 more
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Explicit Dipole Trajectory Solution for Electromagnetically Controlled Spacecraft Clusters
Journal of Guidance, Control, and Dynamics, 2010Satellite formation flight is a much-anticipated technology for future space-science missions, such as high-resolution space-based telescopes. A potentially enabling technology under development allows clusters of spacecraft to maneuver without the use of propellant, instead using electromagnetic control of the relative degrees of freedom within the ...
Samuel A. Schweighart +1 more
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Dynamics, Distributed Control and Autonomous Cluster Operations of Fractionated Spacecraft
2015Chair of Space Systems Engineering, Department of Space ...
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Cluster Spacecraft Observations of Magnetopause Reconnection at Multiple Scales
2013Magnetic reconnection is an inherently multi-scale process where the dynamics at small-scales strongly affect the large-scale evolution of the process. The microphysics of reconnection (i.e. the physics at proton scales and below) is particularly important.
Retinò, Alessandro +7 more
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Cluster Multiple Spacecraft Per Aperture operations [PDF]
SpaceOps 2016 Conference, 2016 openaire +1 more source