Abstract
Giant Ukrainian Radio Telescope (GURT) is a low-frequency one with active phased antenna array, which is being built in Ukraine in addition to the existing UTR-2 radio telescope. In this paper we consider the signal-to-noise ratio in active antenna, which is used as an element of GURT radio telescope antenna array. The sensitivity of the element mainly determines the sensitivity of not only the entire antenna array, but of the whole radio telescope, too. The research technique and the results of numerical calculations are given.
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