飞机进气道的高频电磁散射特性及RCS计算

HF Electromagnetic Scattering Properties and RCS Calculation of the Airplane′s Inlet

介绍了计算空腔结构内部的高频电磁散射的射线跟踪法（ＳＢＲ法）．射线跟踪依几何光学原理，在出射口面处用物理光学法对出射场积分计算远区散射场，分别计算了矩形截面的直进气道和Ｓ形弯进气道的ＲＣＳ值。

This paper introduced Shooting and Bouncing Rays(SBR) method to calculate the RCS of the cavity′s inside structure. The rays shooting and bouncing are in the principle of G.O.,and the far region backscattering field is calculated by P.O. on the out aperture. The RCS of a S bend inlet and a strait inlet with rectangular cross are calculated respectively. Finally, some discussion is given.