Calculation Research of the Radar Cross Section
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摘要: 采用矢通量分裂法在网格加密后对电磁散射场和雷达散射截面积RCS进行了检验.根据矢通量分裂法将特征值分解为正负两部分,每一部分抑制了各自的误差.目前计算RCS大都采用频域方法,运用时域方法在实际网格下进行差分运算还较少见.计算结果与网格加密前的情况基本一致.Abstract: The paper focus on tests on electromagnetics field and Radar Cross Section (RCS) with densified grid provided by the flux-splitting method.It separated the representative value into positive and negative part in order to hold down the allowance errows respectively.For the purpose of optimization design computation,the time-domain scheme is applied to calculate RCS,the final results agree satisfitorily compareing with previous results.
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Key words:
- radio wave scattering /
- radar /
- grids
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1. 薛晓春,李宗瑞,朱自强,等电磁散射场和雷达反射截面积的计算北京航空航天大学学报,1998,24(2):193~196 2. 薛晓春流场/电磁场优化设计计算:[博士后研究工作报告].北京航空航天大学飞行器设计与应用力学系,1997 3. Umashankar K,Taflove A.A noval method to analyze electromagnetic scattering of complex objects.IEEE Transactions on Electromagnetic Compatibility,1982,24(4):397~405 4. Shankar V,Hall W,Mohammadian A H.A CFD-based finite-volume procedure for computational electromagnetics interdisciplinary applications of CFD methods.AIAA Paper 89-1987-CP,1989 5. Vinh H,Dwyer H A.Finite-difference algorithms for the time-domain maxwell'[KG-*5]s equations A numerical approach to RCS analysis.AIAA Paper 92-2989,1992 -
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