The whole system is calibrated separately by parts. From MILO to microwave receiving hom, the special system is simplified to be a two-port network and its S parameter is measured to calculate the attenuation factor a.

• 对于微波功率的标定问题，我们根掘实验条件，将整个系统划分为几个部分分别进行了标定，包括：从MILO到接收喇叭组成的特定系统，将该特定系统简化为一双口网络，并测量出了其S参数，从而计算出与频率密切相关的衰减量a；