本文介绍一种预测任意形状不透明目标在接近前向散射角时的双基地雷达截面积的方法。利用Babinet的原理把目标散射图近似为目标侧影的二维付里叶变换。对球体和正圆柱体的计算表明,其结果与根据精确的Mie理论、矩量法和物理光学的预测相一致。文中还给出了此方法应用的局限性。 This article presents a method for predicting the cross-sectional area of ​​a bistatic radar when an arbitrary shaped opaque target approaches the forward scattering angle. The principle of Babinet is used to approximate the target scattergram as the two-dimensional Fourier transform of the target silhouette. Calculations of spheres and regular cylinders show that the results are consistent with predictions based on exact Mie theory, moment method, and physical optics. The article also gives the limitations of this method.