基于双层涂敷模型的暗室静区精确计算方法  

Calculation method for quiet zone of anechoic chamber based on double layer coating model

作　　者：徐若曦[1,2] 周鹏[1] 章锦文[1] 

机构地区：[1]北京控制与电子技术研究所,北京100038 [2]中国航天第二研究院,北京100854

出　　处：《华中科技大学学报（自然科学版）》2015年第11期73-77,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：二炮总装备部某航天重大专项资金资助项目

摘　　要：针对大型微波暗室静区性能仿真中,数值方法在高频段效率急剧降低,而传统高频算法计算准确度难以保证的问题,提出一种基于弹跳射线理论的双层涂敷模型仿真方法.该方法利用实测数据,分级地对模型进行计算与校正,双层涂敷模型有效简化了锥形吸波材料,弹跳射线法解决了曲面反射及远场精确求取问题.仿真结果表明:该方法与传统的几何光学法相比,高频段的计算精度显著提高,同时平均计算时间短,消耗内存少.理论分析和仿真结果验证了方法的正确性和有效性.To solve the problem that the efficiency of numerical method drops sharply at high frequen‐cy and the accuracy of high frequency algorithm is difficult to ensure in the quiet zone performance simulation of large scale anechoic chamber .A simulation method of double layer coating model based on shooting and bouncing ray was proposed .The model using real measurements was calculated and corrected .Double layer coating model simplified the cone wave absorbing materials ,and the shooting and bouncing ray （SBR） method effectively solved the curve reflection and far field accurately obtai‐ning problem .The simulation results indicate that this method can improve precision compared with the traditional method and can reduce time and memory .Both of the theoretical analysis and the simu‐lation results verified the validity and feasibility of the proposed method .

关 键 词：微波暗室 静区 反射电平 弹跳射线法 双层涂敷模型 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]