【摘要】 简单介绍了时域有限差分法(FDTD)的基本理论,并与其他几种数值方法进行了比较;探讨了完全匹配层(PML)在FDTD中的设置;应用FDTD程序计算了三维介质球的双站RCS,并与文献结果对比说明该程序的有效性;在此基础上计算了简单三维飞机的RCS,并对结果进行了讨论.说明该方法可以精确计算大尺寸复杂目标的RCS.更多还原

【Abstract】 The basic theory of FDTD is introduced and compared with other numerical methods.The setting of Perfecting Matched Layer(PML) in FDTD is discussed.Calculations are performed for the bistatic RCS of medium sphere using 3D FDTD program. Numerical results are consistent with those of literature available,hence the 3D program is shown correct and effective.And then calculations are carried on for bistatic RCS of simple 3D aircraft and the results are discussed.It shows that the method can precisely calculate RCS with big and complex objects.更多还原