A fast physical optics (FPO) algorithm for high frequency scattering

被引:67
作者
Boag, A [1 ]
机构
[1] Tel Aviv Univ, Dept Elect Engn Phys Elect, IL-69978 Tel Aviv, Israel
关键词
electromagnetic scattering; fast algorithms; physical optics; radar cross sections; synthetic aperture radar;
D O I
10.1109/TAP.2003.822426
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 novel algorithm referred as the fast physical optics (FPO) for computing the back-scattered field over a range of aspect angles and frequencies is presented. The computation is performed in the framework of the conventional physical optics approximation appropriate for the high frequency scattering regime. The proposed algorithm is, also, directly applicable to fixed angle bistatic configurations and a variety of single scattering formulations. The method comprises two steps. First, a decomposition of the scatterer into subdomains and computation of the pertinent scattering characteristics of each subdomain. Second, interpolation, phase-correction and aggregation of the scattering patterns of the subdomains into the final pattern of the whole body. A multilevel algorithm is formulated via a recursive application of the domain decomposition and aggregation steps. The computational structure of the multilevel algorithm resembles that of the FFT. The proposed method is especially suited for generation of synthetic data for radar imaging simulation.
引用
收藏
页码:197 / 204
页数:8
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