【摘要】 提出了发射模式下,曲面口径积分/几何光学的混合分析方法。利用等效原理,将天线罩内表面上的反射场等效为面电流和面磁流,沿等效源所在曲面作口径积分,确定二次入射到罩壁上的入射场,经过局部平面的多层介质传输到天线罩外表面,在外表面上将一次传输场和二次反射场矢量叠加,对外表面切向场的表面积分得到天线带罩系统的这场方向图。该方法解决了发射模式下一次传输场和二次反射场的矢量叠加问题,计算精度高;仿真预测结果均为试验所证实。更多还原

【Abstract】 A hybrid analysis of radome based on curvature aperture-integration /geometry optics in transmission model is present in this paper. The reflected fields on the inner surface of radome are equivalent to surface electric currents and magnetic currents according to equivalent principle. By the surface aperture integration of the equivalent source on inner surface, the secondly-incidental fields upon the radome are obtained, then the secondly-incidental wave transfer through local plane of multi-layer dielectric. On the outer surface, the superposition of second-reflected contribution and first-transferred contribution of radome are used for calculating the pattern of antenna with radome. This algorithm solve the problem of vector superposition between the reflected field s and direct transferred field in transmission model with good accuracy. All the predictions are proven to be accurate by the experiments.更多还原