Reconstruction of Dielectric Objects by Solving Volume Integral Equations with Tetrahedral Discretization

摘要：

　　In the integral equation approach for reconstructing unknown dielectric objects,the volume integral equations(VIEs)should be solved because the imaging domain with both true unknown objects and part of background is inhomogeneous.When solving the forward scattering integral equation(FSIE),the Nystr(o)m method with tetrahedral discretization is used since the traditional method of moments(MoM)with the Schaubert-Wilton-Glisson(SWG)basis function may not be convenient due to the inhomogeneity of the imaging domain.The benefits of the Nystr(o)m method include the simple implementation without using any basis and testing functions and lower requirement on geometrical discretization,so it could be more suitable for inhomogeneous problems.When solving the inverse scattering integral equation(ISIE),the Gauss-Newton minimization approach(GNMA)with a multiplicative regularization method(MRM)is employed.The numerical example for reconstructing two contacting identical dielectric spheres is presented to illustrate the inversion approach.

作者: G.C.Wan Q.F.Li K.Yang M.S.Tong

作者单位: Department of Electronic Science and Technology,Tongji University 4800 Caoan Road,Shanghai 201804,China;State Key Laboratory of Millimeter Waves,Nanjing 210096,China

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)

会议地点: 台北

会议语种:英文

页码: 743-747

在线出版日期: 2013-03-01（万方平台首次上网日期，不代表论文的发表时间）