本文給出了一種簡(jiǎn)便的天饋系統(tǒng)性能參數(shù)的細(xì)微特征分析方法。應(yīng)用該方法，可以
對(duì)天饋系統(tǒng)的反射系數(shù)、駐波比、故障距離和回波損耗等參數(shù)進(jìn)行細(xì)微分析，在天饋系統(tǒng)出現(xiàn)重大故障前發(fā)現(xiàn)細(xì)小的、難于確認(rèn)的問題，打破了傳統(tǒng)的在發(fā)生故障之后修理的維護(hù)方法。
關(guān)鍵詞：天饋系統(tǒng)；性能參數(shù)；故障距離

Minute features analysis of performance parmeter of the antenna and cable systems HU Lin ZHANG Jing-tang (Information Engineering University, Zhengzhou Henan 450002, China) Abstract In this paper, a simple and convenient method for minute features analysissing of performance parameter of the antenna and cable system is presented. With this method, we can analysis some parameters of the antenna and cable system, such as reflectance, standing wave ratio, DTF(distance-to-fault) and return loss, it breaks away from the traditional fix-after-failure maintenance process by? finding small, hard to identify problem before major failures occur.
Key words antenna and cable system, performance parameter, distance-to-fault