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本文简述了利用射电源测量地面站G/T的特点及其原理方法。给出了大气吸收衰减和波束展宽修正的计算公式。依据X波段18米天线的技术特性,分析计算了利用金牛座测量18米地面站天线的最小Y因子。分析结果表明:利用射电源测量X波段18米地面站的G/T是切实可行的。
This article describes the use of radio sources to measure the characteristics of ground station G / T and its principles and methods. The formulas of atmospheric absorption attenuation and beam broadening correction are given. Based on the technical characteristics of X-band 18-meter antenna, the minimum Y-factor of 18-meter ground station antenna measured by Taurus was analyzed and calculated. The results show that it is practicable to measure the G / T of X-band 18m ground station by using radio source.