Results 1 to 10 of about 31,438 (221)

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

The Double Star Plasma Electron and Current Experiment [PDF]

Annales Geophysicae, 2005
The Double Star Project is a collaboration between Chinese and European space agencies, in which two Chinese magnetospheric research spacecraft, carrying Chinese and European instruments, have been launched into equatorial (on 29 December 2003) and ...
A. N. Fazakerley, P. J. Carter, P. J. Carter, G. Watson, A. Spencer, Y. Q. Sun, J. Coker, P. Coker, D. O. Kataria, D. Fontaine, Z. X. Liu, L. Gilbert, L. He, L. He, A. D. Lahiff, B. Mihalčič, S. Szita, M. G. G. T. Taylor, M. G. G. T. Taylor, R. J. Wilson, M. Dedieu, S. J. Schwartz   +21 more
doaj   +16 more sources

Research on dynamic path planning algorithm of spacecraft cluster based on cooperative particle swarm algorithm [PDF]

Xibei Gongye Daxue Xuebao, 2021
In order to solve the problem of path planning for the spacecraft cluster to reach the dynamic target point under the premise of considering obstacle avoidance.
Zhang Zhen, Fang Qun, Song Jinfeng, Zhang Xiuwei, Zhu Zhanxia   +4 more
doaj   +2 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   +4 more sources

Methods of Orbit Clustering of Serviced Spacecraft

System technologies, 2019
When planning orbital service operations, it is important to rationally divide a set of orbits serviced by a spacecraft into subsets (clusters) of orbits. This article proposes a technique for clustering the orbits of serviced spacecraft in the event of their servicing by a reusable service spacecraft with an electric rocket low thrust engine.
Yurii Mykhailovych Holdshtein, Anatolii Petrovych Alpatov   +1 more
openaire   +3 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

Justification of the choice of the method and criterion of clustering for intelligent analysis in flight control spacecraft

Космические аппараты и технологии, 2020
The article examines the methods of intelligent analysis of telemetric information of spacecraft. The current state and main shortcomings of the control process during the spacecraft flight control are briefly given.
S. V. Soloviev
doaj   +2 more sources

ECLAT Cluster Spacecraft Magnetotail Plasma Region Identifications (2001–2009) [PDF]

Dataset Papers in Science, 2014
The European Space Agency’s four‐spacecraft Cluster mission has been observing the Earth’s dynamical magnetotail region since early 2001. The magnetotail, and in particular the hot trapped plasma sheet, is a critical region in the coupled Sun‐Earth system.
P. D. Boakes, R. Nakamura, M. Volwerk, S. E. Milan   +3 more
openaire   +4 more sources

A magnetic null geometry reconstructed from Cluster spacecraft observations [PDF]

Journal of Geophysical Research: Space Physics, 2008
This paper reports for the first time the identification of a magnetic structure around a magnetic null in a magnetic reconnection region in the magnetotail. Magnetic reconnection is one of the fundamental processes in astrophysical and solar‐terrestrial plasmas.
J.‐S. He, C.‐Y. Tu, H. Tian, C.‐J. Xiao, X.‐G. Wang, Z.‐Y. Pu, Z.‐W. Ma, M. W. Dunlop, H. Zhao, G.‐P. Zhou, J.‐X. Wang, S.‐Y. Fu, Z.‐X. Liu, Q.‐G. Zong, K.‐H. Glassmeier, H. Reme, I. Dandouras, C. P. Escoubet   +17 more
openaire   +3 more sources

Conjugate observations of quasi‐periodic emissions by Cluster and DEMETER spacecraft [PDF]

Journal of Geophysical Research: Space Physics, 2013
AbstractQuasi‐periodic (QP) emissions are electromagnetic emissions at frequencies of about 0.5–4 kHz that are characterized by a periodic time modulation of the wave intensity. Typical periods of this modulation are on the order of minutes. We present a case study of a large‐scale long‐lasting QP event observed simultaneously on board the DEMETER ...
Němec, F., Santolík, O., Parrot, Michel, Pickett, J. S., Hayosh, M., Cornilleau-Wehrlin, Nicole   +5 more
openaire   +6 more sources