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Information × Registration Number 0219U100850, 0116U002159 , R & D reports Title The development and the application of elements and systems to large decametric antennae. popup.stage_title Head Kalinichenko Mykola M., Доктор фізико-математичних наук Registration Date 22-03-2019 Organization Institute of Radio Astronomy of the NAS of Ukraine popup.description2  An estimation of the influence of ground parameters on the sensitivity of the active antenna was made, it was shown that the change in ground parameters leads to a deviation of the parameters of the active element of the FAR from the normal ones; on the basis of bench and field measurements of the frequency response and FHC, mathematical models of all types of sectional phase rotators used in the North-South and West-East antennas of the UTR-2 radio telescope are developed; an automated system for determining the parameters of the ground has been created, tested and put into operation, and continuous monitoring of the parameters of the ground has been started at the Observatory. S.Ya. Braude (Grakovo village), the first monitoring data was processed and analyzed, variations in the parameters of the earth's surface (dielectric permeability and conductivity) that were caused by changes in weather conditions (drought, rain, snow) were detected. Product Description popup.authors popup.nrat_date 2020-04-02 Close