Intercosmos-19 was launched on 27
Feb. 1979 on elliptical orbit 996-502 km with inclination 74° and was active until middle of 1982. The main
advantage of the platform was complex study of near-earth environment what
decided on the success of the mission. The local plasma parameters (electron
and ion density, electron and ion temperature, ion composition) were measured
together with remote electromagnetic monitoring (topside sounder, VLF and HF
wave measurements) what gave possibility for 3-D study of electron density
distribution and its dynamics, wave-plasma interactions, energy transformation.
It was one of the first and most successful Soviet complex geophysical
satellite platforms which laid foundation to the Soviet (and later Russian)
Space Weather program. Another very large advantage of the platform was the
long-range memory. It was possible to record information from all devices
during 16 hours continuously, and after refreshing, the recording was
continued. So, it was real monitoring system, which gave possibility to do the
real global survey, to study the day-to-day dynamics of the effects and their
variability. The data base contains more than 20 Gbytes
of digital information. Practically all topside sounder data from Intercosmos-19
satellite are now recovered and put in the digital database.
The satellite payload
sounder IS-338, frequency range 0.3 – 15.95 MHz, full frequency scan for 5.6 s,
ionograms were recorded every 8 s, 16 s, 32 s, 64 s depending on the telemetry
probe P-4, concentration range 103 – 106 cm-3 for electrons and 103
- 8×105 cm-3 for
temperature probe KM-3 with floating potential, electron temperature range 600
– 12000 K.
electrophotometer EMO-1, atmospheric emissions up to
50 R in spectral lines 427,8 557.7 and 630 nm, the device was looking by 70° to nadir direction
electron spectrometer SF-3, differential electron and ion fluxes 10 eV – 10.8 keV for electrons and
10 eV – 9.3 keV for ions
with accuracy 20 % in energy and 30° in pitch-angle distribution
energy particle telescope Pero-3I, electron fluxes with energey
E > 40 keV, and protons from 1 to 30 MeV
complex ANCh-2ME, electric and magnetic components. Wide band (70 Hz – 20 kHz)
and narrow-band (10 frequencies) receivers
wide-band receiver 0.1 – 5 MHz AVCh-2 with wideband telemetry transmitter
AVCh-2T, electric component.
swiping radiospectrometer IRS-1 0.1 – 6.0 MHz, electric component
Mass-spectrometer NAM-4 for ion and neutral composition
measurements. Mass range 1 – 60
with concentration from 102 to 106 cm-3, time
resolution 250 ms.