Inverse Scattering of a Periodic Inhomogeneous Dielectric Scatterer
學年 108
學期 2
出版（發表）日期 2020-05-26
作品名稱 Inverse Scattering of a Periodic Inhomogeneous Dielectric Scatterer
作品名稱（其他語言）
著者 Chien Ching Chiu; Bo Jie Hong; Jiang Hao
單位
出版者
著錄名稱、卷期、頁數 Journal of Electromagnetic Waves and Applicationss 34(8), p.1015-1028
摘要 This paper is to reconstruct the periodic inhomogeneous dielectric distribution of the scatterer buried in the rough surface. In order to explore the dielectric coefficient distribution of the unknown dielectric object under the rough surface, we emit electromagnetic wave to the object and measure the scattered electromagnetic wave above the rough surface. Base on Green’s identity and the induced current concepts, the nonlinear integral equation can be derived and solved by the method of moments. Next, the inverse scattering problem is converted into an optimization problem. We use Self-Adaptive Dynamic Differential Evolution (SADDE) and Asynchronous Particle Swarm Optimization (APSO) to find the extreme value of the problem. With the regularization technique, the reconstruction is good. When the noise is less than 1%, the dielectric constant can also be achieved successfully. Numerical results show that SADDE can reduce the error for the permittivities of the object better than the APSO.
關鍵字 Microwave imaging;inhomogeneous dielectric scatterer;rough surface; Green’s identity;self-Adaptive dynamic Differential evolution (SADDE);Asynchronous particle Swarm optimization (APSO)
語言 en
ISSN 0920-5071
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Chien Ching Chiu
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
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