卫星通信地球站无线电设备测量方法 第三部分:分系统组合测量 第二节:4～6 GHz接收系统品质因数（G/T）测量

Methods of measurement for radio equipment used insatellite earth stations--Part 3:Methods of measurements for combination of sub-systems--Section two:Measurement of the figure of merit(G/T)of the receiving system in the 4GHz to 6GHz range