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混合绕射理论(HTD)首先假定散射体上的电流主要成分为光学电流即2(?)x(?)i。在接近阴影区和导体表面不连续处则需用矩量法计算,因之在邻近阴影区和不连续处全电流为光学电流与矩量法电流之和,然后再对磁场积分方程用叠代法求得近似区的电流。由于量代程序由接近真实电流值开始的,因之只需一至二次计算,结果收敛很快。本文将给出对不同锥角及直径的卵形体轴向雷达目标散射面积的计算结果,并讨论混合绕射理物的进一步发展。
The theory of hybrid diffraction (HTD) first assumes that the main component of the current in the scatterer is the optical current, 2 (?) X (?) I. Near the shadow area and the conductor surface discontinuities need to use the moment method of calculation, so in the shadow area and discontinuity near the total current optical current and the moment method of current and then the magnetic field integral equation with the iteration Method to approximate the current area. Since the batch process begins with a near real current value, only one or two calculations are needed and the result converges quickly. This article will give the calculation results of the target scattering area of oval axial radar with different cone angles and diameters, and discuss the further development of the hybrid diffraction.