Astronomy and Astrophysics – Astronomy
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990sppi.rept...29r&link_type=abstract
In ESA, Space Plasma Physics Investigation by Cluster and Regatta p 29-35 (SEE N91-10417 01-46)
Astronomy and Astrophysics
Astronomy
Cluster Mission, Current Density, Error Analysis, Magnetic Fields, Spaceborne Astronomy, Spacecraft Configurations, Waveforms, Accuracy, European Space Programs, Magnetometers, Mathematical Models, Positioning, Space Plasmas, Spacing
Scientific paper
A numerical model is carried out to estimate the accuracy of the determination of the current density via measurements of the magnetic field at four locations. Three potential sources of error are investigated: the error associated with the nonhomogeneity of the current density profile over the volume defined by the four Cluster spacecraft; the error associated with the natural noise or the noise in the electronics of the magnetometer; and the error related to the uncertainty in the determination of the distances between the spacecraft. The latter two errors are modelled by random perturbations applied to the 4 by 3 magnetic waveforms.
Robert Philippe
Roux Alain
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