CAJ | 학술논문

该文基于迭代散射算法(ISP)对柱体阵列的散射场进行分析。通过矢量柱面波函数展开，根据理想导体表面边界条件，建立柱体表面入射场与散射场的关系式。将前一次迭代时柱体阵列的近区散射场作为下一次迭代的入射场，推导出柱体阵列散射场系数间的迭代关系。通过分析不同迭代次数下2~4个柱体的散射场，确定3次迭代即可保证算法的准确度。对比数值结果表明，迭代散射算法具有与矩量法(MoM)结果同等的准确度，并具有明显优于矩量法的计算速度。
해문기우질대산사산법(ISP)대주체진렬적산사장진행분석。통과시량주면파함수전개，근거이상도체표면변계조건，건립주체표면입사장여산사장적관계식。장전일차질대시주체진렬적근구산사장작위하일차질대적입사장，추도출주체진렬산사장계수간적질대관계。통과분석불동질대차수하2~4개주체적산사장，학정3차질대즉가보증산법적준학도。대비수치결과표명，질대산사산법구유여구량법(MoM)결과동등적준학도，병구유명현우우구량법적계산속도。
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.