挂载导弹的作战飞机RCS特性数值模拟

Numerical simulation on the RCS of combat aircraft for mounted missile

对挂载导弹的作战飞机系统的雷达散射截面(radar cross section,RCS)特性进行研究。基于物理光学法和等效电磁流法,对外挂导弹的三代作战飞机系统和内埋导弹的隐身作战飞机系统的RCS特性进行对比分析,应用CATIA软件和Matlab软件,数值模拟了作战飞机系统的RCS特性,并且分析了不同目标的RCS值对雷达发现概率的影响,研究了不同雷达波段对内埋导弹的作战飞机系统的发现概率的影响。研究结果表明,内埋导弹的隐身作战飞机在RCS特性及被雷达探测的距离方面的性能均明显优于外挂导弹的三代战机。

The characters of radar cross section （RCS） of combat aircraft mounted missiles is studied Based on physical optics and the equivalent electromagnetic flow method, this article compares the RCS fea tures between the third-generation combat aircraft with external missiles and stealth combat aircraft with in ternal missiles. Using CATIA and Matlab, this paper finishes the numerical simulation of RCS characteristics of combat aircrafts system analyzes the influence of the RCS value of the different targets on radar detection probability, and then studies the influence of the different radar frequency bands on the detection proba bility of the stealth combat aircraft system with internal missiles. The results show that the stealth combat aircraft with internal missiles is obviously superior in RCS features and distance detected by radar to the third generation combat aircraft.