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基于物理光学和等效电磁流法，本文讨论了飞行器座舱光学区电磁散射特性和雷达散射截面（ＲＣＳ）的计算方法。利用场量幅度和相位加权法，求解了座舱内部结构散射场。座舱外结构散射场通过座舱罩表面的数学拟合曲面和物理光学近似未获得。文中给出了一个（０．４×０．４）ｍ２无金属镀层的座舱风挡玻璃和带有薄金属镀层的风挡玻璃的ＲＣＳ结果，证明了此种低ＲＣＳ座舱罩的隐身性能。
Based on physical optics and equivalent electromagnetic flow method, this paper discusses the electromagnetic scattering characteristics and radar cross section (RCS) calculation method of aircraft cabin optical zone. Using the field magnitude and phase weighting method, the scattering structure of the internal structure of the cabin is solved. The scattering field of cockpit outer structure is not obtained by the mathematical fitting surface and the physical optics approximation of the cockpit cover surface. The RCS results for a (0.4x0.4) m2 passenger compartment windshield without metal plating and a windshield with a thin metal coating are presented to demonstrate the stealth performance of such low RCS canopy.