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The paper deals with the methods for metrological support of ionospheric, magnetic, and heliogeophysical observations of the state observation network, including ground-based and space segments, and with the directions for improving the accuracy and reliability of measurements. The solutions to the previously identified problems and the implementation of proposals on improving the measurement quality for operational response to heliogeophysical hazards at the current stage of development of the geophysical monitoring system are demonstrated.

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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.