Abstract An analysis of the differences between the measured by the Intercosmos Bulgaria 1300 satellite and the computed from the IGRF-1980 values of the magnetic field intensity is presented. In a global scale the residuals are negative. A 75 nT spacecraft remanent magnetic field along the X-axis is determined. Partially the negative residuals could be explained by the model itself which results in a stronger field than the actual one. The spacecraft inductive magnetization may be a reasonable explanation for the rest. It is difficult to explain the negative residuals in the polar region by a magnetization along any of the axes. The complex character of the differences in this region is conditioned by the external fields, in particular, by the ionospheric current systems. The authors believe that the bias fields from the spacecraft have a static character and they are restricted mainly along the X-axis.
Magnetic field measurements in the ionosphere-magnetosphere region
Advances in Space Research ; 6 , 9 ; 111-114
1986-01-01
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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