论文部分内容阅读
一、前言可以利用射电星这种世界通用的标准信号源,测量天线绝对增益、方向图和波束宽度等特性。金牛—A、仙后—A、天鹅—A等强射电星,其辐射“强度”及“机理”都已知道,能很好地用于测量大型天线的特性。不过,上述射电星对于小型天线(直径在若干米以下)的特性测量,其强度未必够用,因而受到限制。于是小型天线特性的测
First, the preamble You can use radio star this world standard signal source to measure the absolute antenna gain, pattern and beam width and other characteristics. Taurus-A, Swan-A and other radios are known for their radiation “intensity” and “mechanism” and can be well used to measure the characteristics of large antennas. However, the above-mentioned radio star is limited in its measurement of the characteristics of a small antenna (diameter of several meters or less) whose strength may not be enough. So small antenna characteristics of the test