计算天线罩瞄准误差的间接射线法

Applying Indirect Ray Method to the Calculation of Boresight Error of Radome

讨论了利用几何光学射线法的接收公式(即间接射线法)计算大电尺寸天线罩的功率传输系数、瞄准误差以及瞄准误差斜率的基本理论和分析步骤,并与物理光学法和几何光学射线法的发射公式(即直接射线法)进行了比较,从而说明利用间接射线法计算天线罩的功率传输系数、瞄准误差和瞄准误差斜率既能满足工程上的精度要求,又减少了工作量。

This paper discusses the basic theory and analytical steps of using indirect ray method to calculate power transmission coefficient, boresight error and boresight error slope of large dimension radome. Furthermore, indirect ray method is compared with direct ray method of geometrical optics and physical optics, which proves that indirect ray method not only satisfies the required engineering precision, but reduces the complexity of calculation as well.