仿真得出的隐身飞机短波波段雷达截面积特性

摘要

To analyse the detection performance of over-the-horizon sensor of sky wave radar needs the characteristics of stealth fighter radar cross section (RCS) on short wave band. However,the data can not be measured in practice. With the combination of XFDTD software and F-22 3ds-Max model, the characteristics of F-22 back-scattered RCS on short wave band were simulated in this paper. It was shown that the RCS of F-22 on short wave band was almost resonance,and the value of it was big,which had an increasing trend with the variation of frequency and incident angle. These features made the fighter stealth impossible on short wave band, which a-greed with the reports that sky wave radar could detect the F-22 fighter,and provided the direction of parameters designing and operating method for sky wave radar.%为了研究天波雷达超视距探测,需要隐身飞机在短波波段的雷达截面积特性,但是得不到实测数据,因此采用成熟的XFDTD电磁计算软件结合3ds-Max模型,对F-22短波波段的后向散射RCS特性进行了仿真.仿真得出:F-22在短波波段散射特性接近谐振散射,RCS值较大,并且随着入射雷达频率和入射角度的改变会进一步增大.这些特性导致隐身飞机在短波波段很难隐身,与报道的天波雷达可以探测F-22相吻合,并为天波雷达的参数设计及使用方法指出了方向.