高原卫星通信地球站驻波比测量方法

Measurement of VSWR to the Satellite Communications Earth Station

驻波比是衡量天馈系统工作状态的一项重要指标。为了验收卫星通信地球站天线工程,提出了一种采用正反向耦合器进行天线驻波比测量的方法,通过频谱分析仪和正反向耦合器将天馈系统的入射波电平和反射波电平提取出来,然后对采集数据进行预处理,从而计算出驻波比,解决了贵重仪表在高海拔地区运输困难的问题,具有简单、适用和经济的特点。

Voltage Standing Wave Ratio（VSWR） is an important indicator to measure antenna-feeder system working status. A measurement method is proposed to measure VSWR on engineering receiving inspection of satellite communications earth station antenna. In this method, incident wave level and reflected wave level are get by using spectrum analyzer and forward-backward coupler, then data are pretreated, at last VSWR is calculated out. This method resolves the transport problem of valuable instruments, and it＇s simple, suitable and economical.