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Information × Registration Number 0222U001540, 0121U109902 , R & D reports Title Monitoring of the geospace conditions and space weather disturbances using national and international remote sensing systems. Stage № 4 Influence of AGW/TID effects on ground-space communication and navigation systems. Experimental study of artificial acoustic modification of ionosphere using URAN-3 radio telescope and ground-controlled acoustic emitter. popup.stage_title Head Zalizovskyi Andrii V., Доктор фізико-математичних наук Registration Date 28-01-2022 Organization Radio Astronomical Institute of the National Academy of Sciences of Ukraine popup.description2  Monitoring of the atmospheric gravitational waves and travelling ionospheric disturbances (AGW/TID) caused by them was continued in 2021 using the facilities of IRA NASU in Ukraine, Arctic, and Antarctic. The measurements in Ukraine were conducted by the multi-position Doppler HF facility, a Doppler ionosonde, and the network of permanent GNSS stations. A technique allowed to choose a more adequate model of TID using the data of Doppler ionosonde was developed. The characteristics of TID restored within the model of perfectly reflecting waved surface moving at the ionospheric heights were reproduces and used later to solve the problems of estimating the parameters of HF radio signals propagating on radio lines of arbitrary length and orientation. Statistical analysis of AGW/TID parameters according to the data of almost four-year measurements by multi-position HF Doppler facility in Kharkiv region was conducted. The distributions of TID by periods, velocities of propagation are estimated. The average "rose of directions" of TID propagation is calculated. Seasonal and daily variations of the main TID parameters are shown. Algorithms and methods of numerical processing of signals of GNSS satellite transmitters registered on the Earth are upgraded in order to reproduce and visualize the characteristics of AGW/TID. Product Description popup.authors Kashcheyev Serhiy Borysovych Koloskov Oleksandr Valeriyovych Lysachenko Volodymyr M Lytvynenko Leonid Mykolaiovych Pikulik Ivan I. Reznichenko Artem I Soina Anna V Sopin Andriy Oleksandrovych Tokarska Lyudmyla Dmytrivna Charkina Olesya V. Yampolskiy Yuriy Musiiovych popup.nrat_date 2022-03-09 Close