机翼的雷达散射截面计算

飞机雷达散射特性是影响飞机生存力的重要因素之一。在镜面反射得到控制后，机翼成为影响飞机雷达散射特性的重要散射源。利用物理光学和物理绕射理论计算翼的雷达散射截面。在计算中不仅考虑了机翼表面和后缘尖劈的散射，而且也考虑了由于面分块造成翼面不连续而形成的尖劈散射。

THE CALCULATION OF RADAR CROSS SECTION FOR AIRCRAFT WINGS

Radar scattering characteristic of the aircraft is an important factor for its survivability.Wing is the important scattering source on the aircraft, when direct reflection is controlled.Physical optics and physical theory of diffraction are used to calculate radar cross section of the wing in this paper. Not only the scatter of the face and trailing edge, but olso the scatter resulting from wedge by dissecting wing into discontinuos face is considered in the calculation. It is shown that using this method satisfactory precision can be obtained, through compared calculating results with experiment. Radar scattering characteristic is analysised and some conclusions about the scattering peaks of leading edge and trailing edge are obtained.The effect of secondary diffraction should be further considered for perpendicular,polarization.