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• W989898826 abstract "Abstract At first, the receiving system of the Tianma 65m radio telescope (TM65m in brief) and its noise characteristics at the L, S, C, and X four frequency bands are described. Then, a few measuring methods of system noise temperature are discussed, and the major factors affecting the noise temperature measurement are analyzed, including the errors caused by the non-linearity, feed network insertion loss, mismatch, and so on. With the Y-factor method the noise temperature of the noise source calibrated in the laboratory is verified, indicating that its accuracy attains ∼0.2K. Finally, the system noise temperatures actually measured at the four frequency bands and an analysis on the result are given." @default.
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• W989898826 date "2015-07-01" @default.
• W989898826 modified "2023-09-22" @default.
• W989898826 title "The Measurement and Analysis of System Noise Temperatures of the TM65m Radio Telescope at Low Frequency Bands1,2" @default.
• W989898826 doi "https://doi.org/10.1016/j.chinastron.2015.07.010" @default.
• W989898826 hasPublicationYear "2015" @default.
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