Open AccessBistatic scattering from three-dimensional target on perfectly conducting rough surface by using G-SMFSIA/CAG
Author(s) -
Wei-Jie Ji,
Chuangming Tong
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.010301
Subject(s) - scattering , surface (topology) , method of moments (probability theory) , physics , bistatic radar , matrix (chemical analysis) , convergence (economics) , iterative method , moment (physics) , monte carlo method , integral equation , mathematical analysis , computational physics , optics , mathematics , classical mechanics , algorithm , computer science , geometry , radar , materials science , radar imaging , composite material , telecommunications , statistics , estimator , economics , economic growth
This paper presents a novel and powerful numerical technique called general sparse-matrix flat-surface iterative approach-canonical grid (G-SMFSIA/CAG), which combines the sparse-matrix flat-surface iterative approach-canonical grid (SMFSIA/CAG) for 2D conducting rough surface and the method of moment (MoM) based on Rao-Wilton-Glisson (RWG) function for PEC target, to compute the electromagnetic scattering from a three-dimensional PEC target on conducting rough surface. The coupling surface integral equations (SIEs) for the composite model are derived based on Huygens surface equivalence principle. The SMFSIA/CAG is applied to solve the SIE of rough surface, and the targets’ SIE is solved using MoM. The iteration of SMFSIA/CAG and MoM takes account the interactions between target and the rough surface. Combining the PM(Pierson-Moskowitz)sea surface generated using Monte-Carlo method, the bistatic scattering coefficient for different targets on sea surface are computed. Convergence and effectivity of the G-SMFSIA/CAG is numerically validated. The bistatic scattering coefficient from ship on sea surface is calculated finally,and the dependence of bistatic scattering pattern upon the wind speed is discussed.