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Information × Registration Number 0225U002244, (0124U000478) , R & D reports Title Action of disturbances in the near-to-Earth space on the characteristics of radio signals in radio communication, radar and radio navigation channels popup.stage_title Теоретичні дослідження впливу на характеристики радіосигналів в іоносфері високоенергетичних джерел Head Harmash Kostiantyn P., Кандидат фізико-математичних наук Registration Date 26-02-2025 Organization V.N. Karazin Kharkiv National University popup.description1 Disturbances in the Earth-atmosphere-ionosphere-magnetosphere system caused by the action of high-energy sources of natural (geospace storms, the fall of massive meteoroids, the movement of the solar terminator, solar eclipses, weather fronts, volcanic eruptions, earthquakes, etc.) and anthropogenic origin (powerful explosions, active military actions, disasters at military arsenals, powerful radiation of radio systems, etc.) can significantly affect the characteristics of the propagation of radio waves of various frequency bands and, accordingly, the efficiency of the operation of various radio technical systems, both civil and military, terrestrial and satellite. There is an urgent problem of forecasting and taking into account these distortions in the characteristics of radio waves during the operation of the mentioned radio equipment. Purpose of the research is theoretical and experimental studies of the influence of high-energy processes of artificial and natural origin on the ionospheric channels of telecommunications, radar, radio reconnaissance and navigation, determination of the magnitude of distortions of the main radio signal parameters, as well as the development of recommendations for taking into account these effects in the operation of radio engineering systems. popup.description2  The object of research is large- and global-scale physical processes in the atmosphere and geospace caused by the action of high-energy sources of natural and man-made origin. The subject of the study is the degree of distortion of the main characteristics of radio signals used in radar and telecommunications systems, as well as in satellite-borne and ground-based navigation systems, under the action of high-energy sources of natural and man-made origin at various distances. The goal of the research is theoretical and experimental studies of the impact of high-energy processes of artificial and natural origin on the ionospheric propagation channels for radar, navigation, telecommunications, and radio reconnaissance; the determination of the magnitude of ionospheric distortion of the main parameters of radio signals used by the systems, as well as the development of recommendations to take these effects into account in the operation of radio engineering systems. The first stage of the research is dedicated to solving the following problems: the further development of theoretical models of distortion of radio signal characteristics in ionospheric propagation channels under the action of large- and global-scale processes of natural and man-made origin in the atmosphere and geospace; to conduct synchronous measurements, by a number of available radio means, of the magnitude of distortion of the main parameters of radio signals used for probing, which is caused by the action of high-energy sources of natural and man-made origin; to extend the observational dataset. Product Description popup.authors Dorokhov Vasylii L. Zakharov Ivan H. Tsymbal Anatolii M. Chornohor Leonid F. popup.nrat_date 2025-02-26 Close