Astronomy and Astrophysics – Astronomy
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990sppi.rept...57p&link_type=abstract
In ESA, Space Plasma Physics Investigation by Cluster and Regatta p 57-67 (SEE N91-10417 01-46)
Astronomy and Astrophysics
Astronomy
Cluster Mission, Energy Distribution, Plasma Turbulence, Space Plasmas, Spacecraft Configurations, Cartesian Coordinates, European Space Programs, Magnetohydrodynamic Waves, Matrices (Mathematics), Spaceborne Astronomy
Scientific paper
The best method for defining an electrostatic or an electromagnetic turbulence in a space plasma, based on the simultaneous measurement of several wave-field components at several points in space is sought. The turbulent field is supposed to be stationary in time and homogeneous. An estimate of the field-energy distribution, which specifies how the field energy is distributed with regard to the angular frequency and to the wave-number, is derived from a generalization of the Capon high resolution method. Applications to the Cluster and Regatta missions are discussed from the analysis of simulated data. Experimental constraints are examined, particularly the number of satellites, the measure field components, and the accuracy in the measurements (distance between satellites, time synchronization).
Lefeuvre François
Parrot Michel
Pinçon Jean-Louis
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