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飞行器隐身设计的重要参数是雷达散射截面(Radar Cross Section,RCS),因此RCS的快速精确预估对飞行器隐身设计具有重要意义。目前针对飞行器目标已经发展了很多种RCS的计算方法,分别从目标电尺寸大小、目标类型以及实际分析应用等三个方面对现有的高频近似算法、数值精确算法的适用性进行了详细研究,并分析了各种算法的优缺点,如计算精度、效率、误差等。在目标电尺寸方面主要研究各种方法的计算精度和效率,目标类型方面主要研究飞行器布局、腔体以及不连续特征的计算方法,而实际应用方面则是从多方位散射、多频散射、多站散射三个方面对计算方法进行了分析。研究结果对飞行器隐身设计具有一定参考价值。
The important parameter of the stealth design is the Radar Cross Section (RCS), so the fast and accurate prediction of RCS is of great significance to stealth design of the aircraft. At present, a lot of RCS methods have been developed for aircraft targets, and the applicability of existing high-frequency approximation algorithms and numerical precision algorithms are studied in detail from the aspects of target size, target type and practical analysis application , And analyzes the advantages and disadvantages of various algorithms, such as calculation accuracy, efficiency, error and so on. In the aspect of target electrical dimension, the calculation accuracy and efficiency of various methods are mainly studied. The target types mainly focus on the calculation of aircraft layout, cavity and discontinuity features. Practical applications include multi-directional scattering, multi-frequency scattering, multi- Station scattering in three aspects of the calculation method was analyzed. The research results have some reference value to the aircraft stealth design.