天馈系统性能参数的细微特征分析

提出了一种采用频域反射计法分析天馈系统性能参数的方法，并对测量误差进行了讨论。该方法将频域测量的数据(矢量)转换到时域，获得故障距离DTF(distance—to—fault)，以有效了解天馈系统内部的细微特征。应用该方法，可以在天馈系统出现重大故障前发现细小的、难于确认的问题，打破了传统的故障之后再修理的维护方法。计算机仿真结果表明，采用频域反射计法分析天馈系统性能参数的细微特征是可行的。

Minute features analysis of performance parameter of the antenna and cable systems

In this paper, a new method for measuring performance parameters of the antenna and cable system based on FDR (frequency domain reflectometry) technique is presented. And the error analyses are carried out. The method converses the data (vector) from frequency domain to time domain to effectively analyze the inner minute features of the antenna and cable system. It breaks away from the traditional fix-after-failure maintenance process by finding small, hard to identify problem before major failures occur. The simulation results show that the new method is valid.