Multilevel Physical Optics Algorithm for Near-Field Double-Bounce Scattering

作     者：Roudstein, Moty Brick, Yaniv Boag, Amir 

作者机构：Tel Aviv Univ Sch Elect Engn IL-69978 Tel Aviv Israel Univ Texas Austin Inst Computat Engn & Sci Austin TX 78712 USA 

出 版 物：《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 (IEEE Trans Antennas Propag)

年 卷 期：2015年第63卷第11期

页      面：5015-5025页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

基　　金：Israel Science Foundation (ISF) [1081/12] DDR&D (MAFAT) of the Israeli MOD Israeli Navy 

主　　题：Fast algorithms high-frequency methods physical optics (PO) scattering cross section 

摘      要：A fast algorithm for the evaluation of the double-bounce (DB) contributions to the physical optics scattering integrals, over a range of aspect angles and frequencies, is presented. The work extends the preceding far-field algorithm, to encompass three-dimensional and near-field scenarios. The algorithm relies on multilevel sampling and interpolation of phase- and amplitude-compensated contributions of subdomain pairs. A particular design of the phase- and amplitude-compensation functions and sampling grids, tailored to the DB near-field case, is presented. The improved performance and error controllability are demonstrated via representative examples.