飞行器目标RCS计算方法适用性研究

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。

Research on the Applicability of the Approach for Calculating the RCS of Aircraft Target

The stealth of aircrafts has become increasingly demanding,and the important parameter of aircraft stealth design is the radar cross section(Radar Cross Section,RCS),so the fast and accurate beforehand estimate of RCS is very important for the stealth design of aircraft.There are many calculations of RCS for the aircraft,which have been developed.From the target size,the target type and the application of practical analysis,the applicability of high-frequency approximation algorithms and numerical exact algorithms has been researched in detail.At the same time,the advantages and disadvantages of various algorithms have been analyzed,such as accuracy,efficiency,errors,etc.In the department of target size,the accuracy and efficiency of the methods are mainly researched.In the department of target type,the different methods for aircraft Layout,cavity and discontinuous characteristic have been researched.In the part of actual application,the methods were analyzed from the multi-faceted scattering,the multi-frequency scattering and the multi-station scattering.The result has an important significance for the stealth design of aircraft.