超低空目标的广义布儒斯特效应  

A Study of G-Brewster of Super-low Altitude Target

作　　者：隋栋训 童创明[1] 彭鹏[1] 王童[1] 梁海涛[2] 

机构地区：[1]空军工程大学防空反导学院 [2]93861部队

出　　处：《空军工程大学学报（自然科学版）》2015年第4期29-32,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61372033);航空科学基金资助项目(20130196005)

摘　　要：超低空预警是当今研究的热点,而多径干扰是影响超低空目标探测的主要因素。针对多径干扰的问题,从电磁散射的角度出发,提出"广义布儒斯特效应",以降低多径干扰的影响。运用小面元高频近似方法(PO+MEC)快速计算目标散射场并生成回波信号;在物理光学法的基础上推导了复反射系数公式;根据"四路径"建立多径回波信号模型。以此为基础,研究了多径信号的广义布儒斯特效应的产生机理,找出多径干扰最小的入射角,并研究其存在的条件。通过改变环境类型及相关参数和入射频率,得出广义布儒斯特效应的内在规律,为超低空对抗打下基础。Detection of super-low altitude target is a hot point in current military confrontation. Multipath Interference is a difficult problem nowadays. To solve the problem,＇G-Brewster＇ is put forward from elec- tromagnetic scattering. The elements of rough surface are thought about and the best angle is found to de- tect the target. To get the echo ,the target is meshed and PO＋MEC is used to calculate the scattering field, and then the reflection coefficient is derived. On the basis, multipath echoes are gotten. The condition of the existence of G-Brewster is studied out, and the angle that strength of multipath interference is lest is found out. The discipline of G-Brewster on environment is posted. The study will lay a foundation of super-low altitude target.

关 键 词：广义布儒斯特效应 多径信号 物理光学法 超低空 

分 类 号：TN011[电子电信—物理电子学]