求翻译：本文研究了基于口径场和面电流的反射面天线电性能计算方法。首先介绍了目前国内外反射面天线的研究和发展现状，接着简要介绍了旋转反射面天线的几何学特性以及反射面天线的基本电磁理论和分析方法。然后对口径场法和面电流法的基本理论进行了说明，同时介绍了一种新的坐标变换方法，可将结构网格转换成电磁网格，以便于计算。并用matlab编写了相应的天线电性能计算程序，绘制天线的方向图和进行了相关天线电性能参数的计算。文章还对相同其他条件下口径场法和面电流法计算所得结果进行了比较，分析了二者的计算精度差异和区别，以及误差主要来源。是什么意思？

正在翻译，请等待...

This paper studies based on the caliber and the reflective surface-current antenna electrical performance calculation method. First introduced the current internal and external reflections of the Antenna Research and Development status quo, and then briefly describes the rotation of the antenna refl

This article has studied based on the caliber field dough making electric current reflecting surface antenna electricity performance computation method.First introduced the present domestic and foreign reflecting surface antenna research and the development present situation, then briefly introduced

正在翻译，请等待...