姬金祖,王岩,黄沛霖,鲁振毅,王英.基于矩量法的机身截面电磁散射特性分析[J].航空工程进展,2013,4(1):37-42
基于矩量法的机身截面电磁散射特性分析
Study of electromagnetic scattering characteristics of fuselage section based on method of moments (MoM)
投稿时间:2012-08-26  修订日期:2012-12-05
DOI:
中文关键词:  矩量法  电磁散射  雷达散射截面  隐身技术
英文关键词:method of moments (MoM)  electromagnetic scattering  radar cross section (RCS)  stealth
基金项目:总装备部武器装备预先研究
作者单位E-mail
姬金祖 北京航空航天大学 jijinzu@buaa.edu.cn 
王岩 北京航空航天大学  
黄沛霖 北京航空航天大学 peilin_h@126.com 
鲁振毅 北京航空航天大学  
王英 北京航空航天大学  
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中文摘要:
      本文研究目的是针对机身截面隐身设计,对比三种典型轮廓的隐身性能,为飞行器外形隐身设计提供一定参考。设计了“凹曲面”、“凸曲面”和“平板曲面”三种典型的隐身飞机机身截面轮廓,采用矩量法(method of moments,MoM)计算了这三种轮廓的雷达散射截面(radar cross section,RCS),并对表面电流密度分布进行了研究。分析了RCS随方位角的变化特性,比较了各截面的隐身性能。分析结果表明,凹曲面和凸曲面机身都可以有效降低侧向RCS,其中凸曲面的隐身效能更佳。平板曲面机身除正下方一个很窄的波峰外,侧向和下方RCS都很小,在对抗仰视雷达时具有很好的隐身性能。
英文摘要:
      The research destination of this paper is for fuselage’s stealth design, comparing three canonical sections’ stealth performance and the result can provide support for aircraft’s shape stealth design. Three typical stealth fuselage sections (concave, convex and plane-curve) are designed and the radar cross section (RCS) and the surface current are calculated with 2-dimensional method of moments (MoM). The characteristics of RCS's variance versus the aspect angle are analyzed and the stealth performances of the sections are compared via the overall and critical angle domain's RCS averages. The analysis results show that concave and convex fuselage can reduce side RCS and the convex's stealth performance is better. Plane-curve fuselage's side and down's RCS is small except for a narrow peak right in the down direction and this fuselage has good stealth performance in countering up-looking radar.
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