Results 1 to 10 of about 2,090,701 (236)

Anisotropic Turbulent Spectra in the Terrestrial Magnetosheath as Seen by the Cluster Spacecraft [PDF]

Physical Review Letters, 2006
Here we report the first three-dimensional spatial spectrum of the low frequency magnetic turbulence obtained from the four Cluster spacecraft in the terrestrial magnetosheath close to the magnetopause. We show that the turbulence is compressible and dominated by mirror structures, its energy is injected at a large scale kp approximately 0.3 (l ...
F. Sahraoui, G. Belmont, L. Rezeau, N. Cornilleau‐Wehrlin, J. L. Pinçon, A. Balogh   +5 more
semanticscholar   +5 more sources

Detection of a plasmaspheric wind in the Earth's magnetosphere by the Cluster spacecraft [PDF]

Annales Geophysicae, 2013
. Plumes, forming at the plasmapause and released outwards, constitute a well-established mode for plasmaspheric material release to the Earth's magnetosphere. They are associated to active periods and the related electric field change.
I. Dandouras
semanticscholar   +6 more sources

An initial investigation of the long-term trends in the fluxgate magnetometer (FGM) calibration parameters on the four Cluster spacecraft [PDF]

Geoscientific Instrumentation, Methods and Data Systems, 2014
Over the course of more than 10 years in operation, the calibration parameters of the outboard fluxgate magnetometer (FGM) sensors on the four Cluster spacecraft are shown to be remarkably stable.
L. N. S. Alconcel, P. Fox, P. Brown, T. M. Oddy, E. L. Lucek, C. M. Carr   +5 more
doaj   +3 more sources

Active spacecraft potential control for Cluster – implementation and first results [PDF]

Annales Geophysicae, 2001
Electrostatic charging of a spacecraft modifies the distribution of electrons and ions before the particles enter the sensors mounted on the spacecraft body. The floating potential of magnetospheric satellites in sunlight very often reaches several
K. Torkar, W. Riedler, C. P. Escoubet, M. Fehringer, R. Schmidt, R. J. L. Grard, H. Arends, F. Rüdenauer, W. Steiger, B. T. Narheim, K. Svenes, R. Torbert, M. André, A. Fazakerley, R. Goldstein, R. C. Olsen, A. Pedersen, E. Whipple, H. Zhao   +18 more
doaj   +6 more sources

Statistical Survey of the Terrestrial Bow Shock Observed by the Cluster Spacecraft [PDF]

Journal of Geophysical Research: Space Physics, 2019
The terrestrial bow shock provides us with a unique opportunity to extensively investigate properties of collisionless shocks using in situ measurements under a wide range of upstream conditions.
O. Krupařová, Vratislav Krupař, Jana Šafránková, Zdeněk Němeček, M. Maksimović, O. Santolı́k, J. Souček, F. Němec, J. Měrka   +8 more
openalex   +2 more sources

Detection of meteoroid hypervelocity impacts on the Cluster spacecraft: First results [PDF]

Journal of Geophysical Research: Space Physics, 2016
AbstractWe present the first study of dust impact events on one of the Earth‐orbiting Cluster satellites. The events were identified in the measurements of the wide band data (WBD) instrument on board the satellite operating in monopole configuration. Since 2009 the instrument is operating in this configuration due to the loss of three electric probes ...
J. Vaverka, A. Pellinen‐Wannberg, J. Kero, I. Mann, A. De Spiegeleer, M. Hamrin, C. Norberg, T. Pitkänen   +7 more
semanticscholar   +4 more sources

Orbital Containment Control Algorithm and Complex Information Topology Design for Large-Scale Cluster of Spacecraft

IEEE Access, 2020
In order to investigate coordinated orbit control problem for large-scale cluster flight spacecraft, a distributed orbital containment control algorithm is proposed for spacecraft cluster flight system with multiple leaders.
Shijie Zhang, Fengzhi Guo, Anhui Zhang, Tingting Zhang   +3 more
doaj   +2 more sources

Cluster PEACE observations of electrons of spacecraft origin [PDF]

Annales Geophysicae, 2001
The two PEACE (Plasma Electron And Current Experiment) sensors on board each Cluster spacecraft sample the electron velocity distribution across the full 4<pi> solid angle and the energy range 0.7 eV to 26 keV with a time resolution of 4 s ...
S. Szita, A. N. Fazakerley, P. J. Carter, A. M. James, P. Trávnícek, P. Trávnícek, G. Watson, M. André, A. Eriksson, K. Torkar   +9 more
doaj   +4 more sources

Whistlers observed by the Cluster spacecraft outside the plasmasphere. [PDF]

Journal of Geophysical Research: Space Physics, 2005
Lightning generated whistlers are ubiquitous within the plasmasphere at both high and low altitudes, and these waves propagate efficiently in both ducted and nonducted modes. On the other hand, in the magnetospheric region outside the plasmasphere, lightning‐generated whistlers are commonly observed at low altitudes (up to ∼6000 km) but only rarely at ...
M. Platino, U. Inan, T. Bell, D. Gurnett, J. Pickett, P. Canu, P. Décréau   +6 more
semanticscholar   +4 more sources

DECENTRALIZED PACKET TASK ALLOCATION FOR SPARS CLUSTER OF SPACECRAFT

Information systems, mechanics and control, 2016
Рассматривается задача децентрализованного распределения целевых задач для разреженного кластера космических аппаратов, выполняемого в виде пакетов для каждого космического аппарата. Предложен усовершенствованный метод, рассматривающий такой кластер как мультиагентную систему и обеспечивающий хорошую сходимость, а также получение приемлемого результата
Александр Геннадиевич Меланченко, Александр Александрович Синча   +1 more
  +6 more sources