高温材料反射率测试支撑平台RCS减缩仿真  

RCS reduction simulation of the support platform for material reflectivity testing at high temperature

作　　者：江禹 姚金杰[1] 杨志良[1] Jiang Yu;Yao Jinjie;Yang Zhiliang(Information Detection and Processing Technology Laboratory,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学信息探测与处理技术重点实验室,太原030051

出　　处：《电子测量技术》2021年第14期38-42,共5页Electronic Measurement Technology

摘　　要：针对高温材料反射率测试时,测试样板支撑平台的光滑金属炉沿具有极强的散射,导致反射率测试精度大大降低的问题,提出了对加热炉沿进行结构改造的方法,设计不同深度和宽度的V型和U型槽炉沿,通过FEKO软件对设计结构的缩比模型进行RCS仿真。三个入射角度的仿真结果表明在24~40 GHz左右频段内的频率点时,深度2的V型和U型槽炉沿都有明显RCS减缩效果,与平整炉沿对比V槽炉沿和U槽炉沿分别平均缩减了8.6和9.8 dB左右,表明结构优化后再进行材料反射率测试可以提高测试精度。Aiming at the problem that the smooth metal furnace edge of the test sample support platform has extremely strong scattering during the reflectance test of high-temperature materials,resulting in a greatly reduced reflectivity test accuracy,a method of structural transformation of the heating furnace edge is proposed,and different depths and widths are designed.RCS simulation of the scaled model of the designed structure is carried out through the FEKO software on the V-shaped and U-shaped furnace edges of the furnace.The simulation results of three incident angles show that the V-shaped and U-shaped groove edges of depth 2 have obvious RCS reduction effects at the frequency points in the frequency band around 24~40 GHz.Compared with the flat furnace edges,the V-shaped and U-shaped groove edges have a significant RCS reduction effect.The furnace edge has been reduced by about 8.6 and 9.8 dB respectively,which indicates that the reflectance test of the material after the structure optimization can improve the test accuracy.

关 键 词：雷达散射截面积 散射仿真 结构优化 反射率 

分 类 号：TN98[电子电信—信息与通信工程]