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基于多面无相位近场数据的电磁干扰源等效建模

Equivalent Modeling of Electromagnetic Interference Sources Based on Multi-faceted Phaseless Near-field Data
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摘要 针对现有无相位近场数据的偶极子建模很难精确对干扰源进行等效的问题,对现有无相位近场数据的干扰源等效建模中所采用的双面迭代方法进行了改进,改进方法主要是采用2个以上不同高度的磁场幅度数据;对双面迭代方法中平面的选择以及改进方法中平面数量和起始面的选择进行了讨论;以干扰源辐射磁场重构的均方根误差(Root Mean Square Error,RMSE)作为偶极子建模准确度评价依据,与现有双面迭代方法及其他优化方法等效建模出的偶极子模型进行了对比验证,对比结果显示该改进方法具有更高的准确度。 To solve the problem that it is difficult to accurately and equivalently model the interference sources by the existing dipole modeling of phaseless near-field data,the double-sided iterative method used in the equivalent modeling of interference source of existing phaseless near-field data is improved.The improved method mainly uses more than two magnetic field amplitude data of different heights.Then,the selection of sides in the double-sided iterative method and the selection of the number of sides and starting side in the proposed method are discussed.Finally,the Root Mean Square Error(RMSE)of the reconstructed magnetic field of the interference source radiation is used as the basis for evaluating the accuracy of dipole modeling.The dipole models obtained using the improved method are compared and verified with the existing double-sided iterative method and other optimization methods,and the results show that the proposed method has higher accuracy.
作者 张超 赵翔 ZHANG Chao;ZHAO Xiang(College of Electronic and Information Engineering,Sichuan University,Chengdu 610065,China)
出处 《无线电工程》 2024年第1期157-163,共7页 Radio Engineering
基金 国家自然科学基金面上项目(61877041)。
关键词 等效源建模 近场扫描 无相测量 电磁兼容 equivalent source modeling near-field scanning phaseless measurement electromagnetic compatibility
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