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

被引：8
|
作者：
Roudstein, Moty [1 ]
Brick, Yaniv [2 ]
Boag, Amir [1 ]
机构：
[1] Tel Aviv Univ, Sch Elect Engn, IL-69978 Tel Aviv, Israel
[2] Univ Texas Austin, Inst Computat Engn & Sci, Austin, TX 78712 USA
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2015年 / 63卷 / 11期
基金：
以色列科学基金会;
关键词：
Fast algorithms; high-frequency methods; physical optics (PO); scattering cross section; FPO ALGORITHM; SURFACES; SOLVERS;
D O I：
10.1109/TAP.2015.2481491
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
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.
引用
收藏
页码：5015 / 5025
页数：11
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