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Parameter Design of Conformal PML Based on 2D Monostatic RCS Optimization

机译:基于2D单机RCS优化的共形PML参数设计

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摘要

In this study, 2D finite element (FE) solving process with the conformal perfectly matched layer (PML) is elucidated to perform the electromagnetic scattering computation. With the 2D monostatic RCS as the optimization objective, a sensitivity analysis of the basic design parameters of conformal PML (e.g., layer thickness, loss factor, extension order and layer number) is conducted to identify the major parameters of conformal PML that exerts more significant influence on 2D RCS. Lastly, the major design parameters of conformal PML are optimized by the simulated annealing algorithm (SA). As revealed from the numerical examples, the parameter design and optimization method of conformal PML based on SA is capable of enhancing the absorption effect exerted by the conformal PML and decreasing the error of the RCS calculation. It is anticipated that the parameter design method of conformal PML based on RCS optimization can be applied to the cognate absorbing boundary and 3D electromagnetic computation.
机译:在本研究中,阐明了具有共形完美匹配层(PML)的2D有限元(Fe)求解过程以执行电磁散射计算。对于作为优化目标的2D单体RCS,进行了共形PML(例如,层厚度,损耗因子,延长顺序和层数)的基本设计参数的灵敏度分析,以识别施加更重要的保形PML的主要参数对2D RCS的影响。最后,通过模拟退火算法(SA)优化了保形PML的主要设计参数。如图中的数值示例所揭示,基于SA的共形PML的参数设计和优化方法能够增强由共形PML施加的吸收效果,并降低RCS计算的误差。预计基于RCS优化的共形PML的参数设计方法可以应用于同源吸收边界和3D电磁计算。

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