CAJ | 학술논문

针对平面波谱-表面积分法计算效率严重依赖于天线口径的问题,提出谱域积分预设方案,提取出谱域积分插值点,建立天线口径平面波角谱密度函数数据库,避免了大量重复计算,并将平面波谱理论的近场计算由四重积分弱化为二重积分.然后,根据平面波谱-表面积分法关于带罩天线远场电性能计算的思想,提出了基于等效源区域分解的并行平面波谱-表面积分算法.开发并在集群系统中实测了基于MPI环境的并行程序,作为应用计算了弹载天线-罩系统远场方向图,结果表明该程序高效准确.
침대평면파보-표면적분법계산효솔엄중의뢰우천선구경적문제,제출보역적분예설방안,제취출보역적분삽치점,건립천선구경평면파각보밀도함수수거고,피면료대량중복계산,병장평면파보이론적근장계산유사중적분약화위이중적분.연후,근거평면파보-표면적분법관우대조천선원장전성능계산적사상,제출료기우등효원구역분해적병행평면파보-표면적분산법.개발병재집군계통중실측료기우MPI배경적병행정서,작위응용계산료탄재천선-조계통원장방향도,결과표명해정서고효준학.
Aiming at the problem that the calculation efficiency of the plane wave spectrum-surface integration (PWS-SI) method severely relies on the antenna aperture, a pre-strategy for spectrum integration is introduced. It selects the spectrum integral-interpolation points to set up the database of the PWS density function for antenna aperture distribution. The strategy avoids mass repeat calculation and simplifies quadruple integral to double integral during the PWS theory antenna near-fields calculation. Then, based on the calculation process of antenna-radome far-fields calculation adopting the PWS-SI method, a parallel PWS-SI (PPWS-SI) algorithm based on decomposed equivalent source region is presented. An algorithm program, which is developed and tested in the message passing interface (MPI) environment on cluster system, is used to compute the antenna-radome system far-fields patterns.Its exactitude and higher efficiency are proved.