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在高频下大型天线作用范围的测试有两个最主要的问题,一个是要有能满足所要求的距离和抑角的开阔平整场地,另一个就是要有修建这样一个场地的费用。特别对于需要进一步研制的复杂馈源系统更是这样。散射方向图测量法使用馈源和副反射器的组合。该组合系统安装在图1所示的双轴转台上。发射源喇叭安装在主反射器的大致位置
There are two major problems with the testing of the large antenna range at high frequencies. One is the need for open, flat areas that meet the required distances and angles, and the other is the cost of building such a site. This is especially true for complex feed systems that require further development. The scatter pattern measurement uses a combination of a feed and a subreflector. The combined system is mounted on a two-axis turntable as shown in FIG. 1. Emitter horn installed in the main reflector of the approximate location