Abstract
The characteristics of the equipment for monitoring X-ray solar radiation onboard geostationary satellites. A reference base for X-ray flux meters of the DIR-E was developed and experimental studies of the characteristics on the technological sample of the device were carried out. The calibration procedure of DIR-E for use in measurements on perspective space vehicles was also developed.
Highlights
Ones of the most important objects of space weather monitoring are the solar flares, which have a significant effect on the upper atmosphere and ionosphere
The solar flare may be accompanied by an increase in the flux of high-energy protons, or so-called solar cosmic rays (SCR), which are the source of anomalous ionization of the D-region of the ionosphere
The effects of ionosphere disturbances and PCA significantly change the conditions of propagation of radio waves and these effects have an important influence on space weather
Summary
Ones of the most important objects of space weather monitoring are the solar flares, which have a significant effect on the upper atmosphere and ionosphere. In [1], relations are given that make it possible to separate proton and non-proton events, based on data on the UUV fluxes and SX fluxes This allows us to estimate the fluxes of protons by the measurements of UUV radiation. It has to be understood the delay between appearance of X-ray flux and particles bombing of Earth atmosphere lies in time interval from several hours till several days. By using simultaneous measurements of SX and ultraviolet radiation, it becomes possible to recognize radiation-dangerous events on the Sun and to estimate the flux of protons almost at the moment radiation arrives from the solar flare to the Earth
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