导弹的RCS计算研究

 综合应用高频RCS分析方法,包括物理光学法、几何绕射理论、物理绕射理论和等效电磁流法等计算了导弹各种散射源如平板、圆柱、二次曲面、边缘等的RCS.结合计算行波和二面角散射的经验公式,计算了导弹整体的RCS.计算结果与测试结果吻合较好,表明如果对目标的散射源分析正确、模拟准确,高频方法的计算结果可以满足工程分析的需要.其主要散射源在头向为雷达天线或红外导引头,在侧向为弹翼之间的二面角以及弹身、弹翼.

Study on Missile-s RCS Calculation

High frequency scattering theory, including physical optics, physical theory of diffraction and equivalent electric current theory, were used to calculate the radar cross section of various scattering resources of missiles, such as flat plate, circular cylinder, quadric surface, edge and so on. Combined with the equation of traveling wave and dihedral reflector, the RCS of total missile was calculated. The measurements and calculations agreed with well. It has been proved that the analysis to missile scattering resources is right, and the modulation to missile scattering resources is quite exact. So high frequency method can satisfied the engineering analysis need for the RCS calculation of missiles. The major scattering resource in top direction is radar antenna or infrared head, in side direction is dihedral reflector formed by missile wings, missile body and wings.