CAJ | 학술논문

考虑光栅形状重构问题，即从已知的近场 Cauchy 数据出发，重构良导体光栅表面形状。基于平面波的稠密性，先将衍射场近似写成有限个平面波的线性叠加，再利用观测数据得到衍射场的近似，最后使用数值优化方法逼近光栅形状。数值算例验证了方法的有效性。
고필광책형상중구문제，즉종이지적근장 Cauchy 수거출발，중구량도체광책표면형상。기우평면파적주밀성，선장연사장근사사성유한개평면파적선성첩가，재이용관측수거득도연사장적근사，최후사용수치우화방법핍근광책형상。수치산례험증료방법적유효성。
A grating reconstruction problem from near field data was considered.On the basis of the denseness of plane waves,we approximately denoted the scattered field with a sum of finite plane waves,and computed it from the known observation data.Then the grating profile was reconstructed by an optimization method.The numerical experiments confirm the effectiveness of our method.