弹道中段非旋转对称目标动态雷达散射截面仿真  

Simulation of Dynamic RCS Data of Rotationally Asymmetric Targets in Midcourse

作　　者：张平定[1] 孙佳佳[2] 张鸣鸣[3] 

机构地区：[1]西安外事学院,西安710077 [2]空军工程大学防空反导学院,西安710051 [3]中国人民解放军驻航宇救生装备有限公司军事代表室,襄阳441000

出　　处：《科学技术与工程》2014年第8期23-27,35,共6页Science Technology and Engineering

基　　金：空军工程大学防空反导学院创新资助计划(12DYCX006);国家自然科学基金(61372033)资助

摘　　要：为计算弹道中段非旋转对称目标的动态RCS,根据高频近似方法和局部场原理,分别用几何绕射理论和物理光学法对目标主体及其尾翼的RCS计算公式进行推导;然后根据中段弹道目标的运动学特性,求得其实时视角值;并根据物理光学法提出了一种判断尾翼遮挡的方法,最终求得其动态RCS值。通过与暗室测量数据的对比,证明了所提方法的有效性。In order to compute the dynamic RCS data of rotationally asymmetric targets with precession in mid- course, according to the high frequency method and local field theory, the RCS calculation formulas of body and wings of the target are derived with the GTD and PO method respectively. Then the dynamic visual angle is worked out based on the kinetic characteristic of ballistic target in midcourse to calculate the dynamic RCS data. Finally, a simple method is put forward to judge whether the wing is shielded because of the target＇ s movement according to the PO method. The correctness of the method is validated by experiments in anechoic chamber.

关 键 词：进动 弹道中段 雷达散射截面 非旋转对称 

分 类 号：TN953.3[电子电信—信号与信息处理]