摘要
采用一致性几何绕射理论分析了某型航空飞行器机体对其上安装的阵列天线辐射方向图的影响。给出了机体散射场分析数学模型建立的原则和天线装机后总场计算方法,详细推导了阴影区曲面绕射场的计算公式,分析了载机对天线辐射方向图的影响。以相控阵天线为例,计算在机体上不同安装位置,天线不同扫描角情况下的天线辐射方向图,为大型阵列天线在载机上的优化布局提供参考。
In this paper, Uniform Geometrical Theory of Diffraction （UTD） is employed to analyzed the effect of aircraft structure on the pattern of array antenna fixed on it. The undamental setting up mathematics model of the scatter field analysis about aircraft and the method of the radiation field computation about the airborne antenna are presented. The formulations of the diffraction field in the shadow region are derived. Taking the phase array antennas as an example, the radiation fields of the antenna in different scan anglesand locations on an airborne surface are computed. The results of this paper can be used to study the optimization of the airborne antenna disposition.
出处
《电波科学学报》
EI
CSCD
北大核心
2008年第5期927-931,964,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金(60671001)
陕西省基础研究基金(2005F21)
