UTD应用中椭圆柱面反射点的解析求解

Analytical Formulas for Reflected Ray Tracing on Elliptic Cylinder based on the Fermat Principle

射线寻迹是应用一致性绕射理论(UTD)分析电大尺寸目标电磁辐射和散射特性的关键步骤。结合费马原理及反射定律,推导了椭圆柱面反射点的解析表达式,并给出了应用此表达式得到的部分椭圆柱反射点及翼型模型的远场方向图结果。经与FEKO仿真比较证明结论是正确的,并能提高场值计算的速度和精度。

Ray-tracing is a key step to apply UTD in solving the problems of radiating and scattering by electrically large objects. Analytical formulas for reflection point on elliptic cylinder were got by using Fermat principle. Thus, far field result and some reflection points were given based on the formulas, and the result was proved correct by comparing it with FEKO. Simultaneously the tracing time was dramatically reduced and the operational precision was improved.