In this letter, a novel method is proposed to rapidly simulate the multiaspect monostatic radar cross section of electrically large complex targets based on the shooting and bouncing ray method (SBR). The core of the method is to use the inheritance of the illumination to determine the illumination of the target surface, rather than independently simulating for each required aspect angle as in the traditional SBR method. To achieve this, the illumination variation on the target surface is summarized and the genetic illumination information is defined. The error of the method is also discussed and the multiple precalculation solutions is proposed to control the error. Different simulation examples show our method has good general applicability and great efficiency. Finally, a realistic aircraft is simulated at 10 GHz using the multiple precalculation solution.

中文翻译：

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基于 SBR 的电大目标多向雷达截面仿真快速方法

在这封信中，提出了一种基于射击和弹跳射线法（SBR）的快速模拟电大型复杂目标的多向单基地雷达截面的新方法。该方法的核心是利用光照的继承来确定目标表面的光照，而不是像传统的SBR方法那样对每个所需的纵横角独立地进行模拟。为此，总结了目标表面上的光照变化，并定义了遗传光照信息。还讨论了该方法的误差，并提出了多种预计算解决方案来控制误差。不同的仿真实例表明我们的方法具有良好的通用性和较高的效率。最后，