Abstract
Magnetic field measurements in solar wind and outer magnetosphere onboard the INTERBALL-1 spacecraft were performed by the following magnetometers: MIF-M magnetometer with both DC sensor (BPP) having 0.2 nT threshold sensitivity at DC and 5 pT at 1 Hz and AC sensor (DM2) with the sensitivity about 0.2 nT at 1 Hz and 0.4 pT at 100 Hz; FGM-I DC magnetometer with threshold sensitivity of 5 pT at 1 Hz; FM-31 DC magnetometer with two sensors having 0.1 nT (sensor MI) and 1.0 nT (sensor M2) threshold sensitivity. During INTERBALL-1 operation the ionosphere experiment SPRUT-VI onboard the MIR station was performed from 06/13–08/26/1999. The measurements of DC magnetic field, electron and ion fluxes at energies between 50 keV–2.5 MeV and 50 keV–30 MeV were made. The SPRUT-MAG digital magnetometer for this experiment is based on the one developed for the ESA Rosetta Lander device ROMAP which threshold sensitivity was about 5 pT/(Hz)1/2 at 1 Hz. This paper discusses the possibility of signals processing with the aim to separate the artificial (technical, connected with the MIR onboard system operation) and natural origin signals as well as to estimate the level of ULF/ELF magnetic field disturbances and particle flows bursts.
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