射线跟踪法用于反射器散射场计算及算法改进

Calculation of RCS of Trihedral Corner Reflectors Using SBR and the Improvement of the Arithmetic of SBR

摘要: 目的研究三面角反射器后向散射场问题，并对射线跟踪法的典型算法进行改进，以提高运算速度。方法利用射线跟踪法对电大尺寸的三面角反射器的后向散射场进行分析，并利用斯托克斯定理将射线跟踪中的面积分简化为代数多项式。结果对提高的算法进行了实例计算，计算结果与以往的试验结果基本吻合。结论将射线跟踪法应用于三面角反射器的后向散射场的研究中；改进的算法不但计算准确而且运算速度也有所提高。

Abstract: Aim To calculate the RCS of trihedral corner reflectors and improve the typical arithmetic of SBR. Methods The method of shooting and bouncing rays was used to calculate the RCS and stokes' theorem was used to improve the arithmetic. Results The validity of the new method was proved with some computation examples. Conclusion SBR can be successfully used in the analysis of trihedral corner reflectors, the improved arithmetic enhances the speed of calculation greatly.