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为了研究复杂结构的雷达散射截面(RCS)高效计算问题,本文找到了一种用矩形等效三角形或机翼曲面结构的近似方法。该方法能有效降低时域有限差分(FDTD)方法的计算区域网格数目,减少程序运行的时间步。用FDTD方法计算的特殊几何模型的雷达散射截面,验证了算法的精度和效率。
In order to study the efficient computation of radar cross section (RCS) with complex structures, an approximate method using a rectangular equivalent triangle or a wing surface structure is found. This method can effectively reduce the number of computational grids in FDTD method and reduce the time step of program operation. The radar cross section of the special geometric model calculated by FDTD method verifies the accuracy and efficiency of the algorithm.