| 一种RCS近场测量中天线方向图补偿方法 |
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| 引用本文： | 高超,陈文强,王洪叶,白杨.一种RCS近场测量中天线方向图补偿方法[J].北京理工大学学报,2019,39(1):58-63. |
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| 作者姓名： | 高超 陈文强 王洪叶 白杨 |
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| 作者单位： | 电磁散射重点实验室,北京,100854;中国人民解放军63629部队,北京,100162 |
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| 摘 要： | 提出了一种近场单站RCS测量中补偿天线方向图效应的方法.基于多散射中心模型给出了考虑天线方向图效应的近场单站RCS回波模型，利用该模型改进了近远场变换算法，克服了传统近场变换算法要求全方向天线的限制.仿真与实验结果表明，近场外推结果与远场测量值很吻合，主瓣及第一、二副瓣误差基本得到了校正；有效消除了天线方向图效应，提高了近远场变换测量的准确性.
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| 关 键 词： | 近场 天线方向图 近远场变换 |
| 收稿时间： | 2017/5/22 0:00:00 |
Antenna Compensation in Near Field RCS Measurement |
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| GAO Chao,CHEN Wen-qiang,WANG Hong-ye and BAI Yang.Antenna Compensation in Near Field RCS Measurement[J].Journal of Beijing Institute of Technology(Natural Science Edition),2019,39(1):58-63. |
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| Authors: | GAO Chao CHEN Wen-qiang WANG Hong-ye and BAI Yang |
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| Institution: | 1. Science and Technology on Electromagnetic Scattering Laboratory, Beijing 100854, China;2. Unit 63629 of the PLA, Beijing 100162, China |
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| Abstract: | A method was presented to mitigate the errors from uncompensated antenna pattern effects in circular near-field monostatic radar measurements. Firstly, a near field signal model was formulated in the presence of an antenna pattern based on the same scattering approximation used in the isotropic situation. Then a modified version of the near field to far field was derived with this model, jumping the traces of multi direction antenna demanded in near field extrapolation. Numerical simulation and experiment results show that the technique can remove antenna pattern errors and improve the accuracy of the far field RCS patterns. |
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| Keywords: | near-field antenna pattern RCS extrapolation |
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