天线柱面近场测量的散射源误差抑制方法研究  

Research on scattering source error suppression method for antenna cylindrical near-field measurements

作　　者：王义[1] 陈运涛[1] 温中贺 刘浩[3] 

机构地区：[1]武汉军械士官学校 [2]中国人民解放军66029部队 [3]中国电子科技集团公司第38研究所

出　　处：《中国测试》2016年第11期23-26,共4页China Measurement & Test

摘　　要：根据柱面波近远场变换基本原理,引出柱面波模系数与辐射源空间位置的特定约束关系,提出一种先将柱面波谱数据进行滤波处理,然后进行波谱远场变换,最终得到抑制散射误差后的远场方向图的方法。随后通过构建阵列天线模型,对抑制效果进行仿真分析。结果表明:该方法在第Ⅰ副瓣位置可改善2d B,120°范围内方向图与理想结果较为吻合,能有效抑制散射误差对远场方向图产生的影响。According to the cylindrical wave near field to far field transformation principle, a constraint relationship between mode coefficient of cylindrical wave and position of radiation source space is presented, Then a new method is proposed to filter the cylinder spectrum data, and then carry out the spectral far field transformation. Finally, the far field pattern of the scattered error is finally obtained. Then ,the suppression effect is simulated and analyzed by building the model of the array antenna. It shows that an improvement of 2dB in the first sidelobe positions by suppression method. Within the range of 120~ ,the post results and the ideal results are in good agreement,the method effectively inhibited the scattering effect on the far field pattern.

关 键 词：柱面近场测量 柱面波 远场方向图 散射 模式滤波 

分 类 号：TN252[电子电信—物理电子学]