Efficient Wide-Band Analysis for 3-D Inhomogeneous Dielectric Objects Using Best Uniform Rational Approximation  

作　　者：ZHAO Bo GONG Shuxi WANG Xing MA Ji DONG Hailin 

机构地区：[1]Science and Technology on Antenna and Microwave Laboratory, Xidian University [2]Institute of Electronics, Chinese Academy of Sciences

出　　处：《Chinese Journal of Electronics》2015年第3期616-621,共6页电子学报（英文版）

基　　金：supported by the National High Technology Research and Development Program of China(863 Program)(No.2012AA01A308);the National Natural Science Foundation of China(No.61301069,No.61401327,No.61201018,No.61471278);the Program for New Century Excellent Talents in University of China(No.NCET-13-0949);Shaanxi Youth Science and Technology Star Project(No.2013KJXX-67);the Fundamental Research Funds for the Central Universities(No.JB140224)

摘　　要：An efficient hybrid method that combines the best uniform rational approximation with the Method of moments(Mo M) based on the Volume integral equation(VIE) is presented for Radar cross section(RCS) prediction of inhomogeneous dielectric objects. Over the broad frequency band, the Chebyshev nodes are chosen. At these frequency sample points, the corresponding VIEs are built and the Mo M is applied to solve the VIEs by using the SWG basis function. The Chebyshev polynomial expansion is employed to approximate the volume currents in the desired frequency band. The Maehly rational approximation is implemented to improve the solution accuracy.Numerical results testify the efficiency and accuracy of the proposed method and time cost ratio is analyzed finally.An efficient hybrid method that combines the best uniform rational approximation with the Method of moments(Mo M) based on the Volume integral equation(VIE) is presented for Radar cross section(RCS) prediction of inhomogeneous dielectric objects. Over the broad frequency band, the Chebyshev nodes are chosen. At these frequency sample points, the corresponding VIEs are built and the Mo M is applied to solve the VIEs by using the SWG basis function. The Chebyshev polynomial expansion is employed to approximate the volume currents in the desired frequency band. The Maehly rational approximation is implemented to improve the solution accuracy.Numerical results testify the efficiency and accuracy of the proposed method and time cost ratio is analyzed finally.

关 键 词：Best UNIFORM RATIONAL approximation Radar cross section(RCS) Volume integral equation(VIE) WIDE-BAND scattering 

分 类 号：TN958[电子电信—信号与信息处理]