【摘要】 在飞行器隐身设计中,为了实现进气道RCS的精确预估,提出了很多混合方法来提高计算精度和效率。本文给出了应用SBR/FDTD混合法分析带有复杂终端的圆柱型腔体的雷达散射截面问题的方法,重点分析了2种算法之间的耦合过程。最终通过对带有柱形终端的圆柱形腔体的计算和分析,并与文献结果进行对比,验证了该方法的正确性和有效性。更多还原

【Abstract】 In stealth design of aircrafts,in order to achieve precise approximation of jet engine inlet,many hybrid methods have been put forward to improve the precision and efficiency of the calculation. In this paper,the RCS of a circular cavity with arbitrarily shaped termination is analyzed by using SBR/FDTD hybrid method. Much emphasis is put on the coupling between SBR and FDTD method. The RCS of a circular cavity with a cylinder hub termination are finally calculated and analyzed. Correctness and effectiveness of the proposed method are approved by comparing the calculated results with results given in the reference.更多还原