基于迭代散射算法的柱體陣列散射場(chǎng)分析

劉起坤; 周東方; 邢鋒; 雷雪; 余道杰

doi:10.11999/JEIT150167

基于迭代散射算法的柱體陣列散射場(chǎng)分析

doi: 10.11999/JEIT150167

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(62101056)和國(guó)家863計(jì)劃項(xiàng)目(2014AA01A707)

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出版歷程
- 收稿日期: 2015-01-29
- 修回日期: 2015-05-06
- 刊出日期: 2015-09-19

Analysis on Scattering Characteristics of Cylinder Array Based on Iterative Scattering Algorithm

摘要

摘要: 該文基于迭代散射算法(ISP)對(duì)柱體陣列的散射場(chǎng)進(jìn)行分析。通過矢量柱面波函數(shù)展開，根據(jù)理想導(dǎo)體表面邊界條件，建立柱體表面入射場(chǎng)與散射場(chǎng)的關(guān)系式。將前一次迭代時(shí)柱體陣列的近區(qū)散射場(chǎng)作為下一次迭代的入射場(chǎng)，推導(dǎo)出柱體陣列散射場(chǎng)系數(shù)間的迭代關(guān)系。通過分析不同迭代次數(shù)下2~4個(gè)柱體的散射場(chǎng)，確定3次迭代即可保證算法的準(zhǔn)確度。對(duì)比數(shù)值結(jié)果表明，迭代散射算法具有與矩量法(MoM)結(jié)果同等的準(zhǔn)確度，并具有明顯優(yōu)于矩量法的計(jì)算速度。
- 電磁散射 /
- 迭代散射算法 /
- 多次散射 /
- 柱體陣列 /
- 矩量法
Abstract: Based on Iterative Scattering Process (ISP) algorithm, the scattering characteristics of cylinder array are analyzed. The relationship between incident field and scattering filed can be evolved from the cylindrical harmonic functions under surface boundary condition of perfect conductor. With the previous iterative scattering fields among cylinders being the incident field next iteration, the coefficient relationship of scattering fields among cylinder array is derived. After analyzing the scattering fields of two or four cylinders within different iterations, it can be obtained that the calculated result of ISP algorithm keeps high accuracy with only three iterations. The results compared with numerical methods show that ISP algorithm and Method of Moments (MoM) agree well, whereas ISP algorithm has an observably faster calculated pace.
- Electromagnetic scattering /
- Iterative Scattering Process (ISP) algorithm /
- Multiple scattering /
- Cylinder array /
- Method of Moments (MoM)

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