| 微波暗室内双站RCS测量方法的仿真 |
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| 引用本文： | 李志平,何国瑜.微波暗室内双站RCS测量方法的仿真[J].北京航空航天大学学报,2008,34(9):1049-1052. |
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| 作者姓名： | 李志平 何国瑜 |
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| 作者单位： | 北京航空航天大学,电子信息工程学院,北京,100191;北京航空航天大学,电子信息工程学院,北京,100191 |
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| 摘 要： | 阐述了在微波暗室内使用紧缩场和平面近场扫描测量双站RCS(Radar Cross Section)的方法,并用天线耦合公式、平面波综合和等效原理将近场变换到远场.分析了采样、有效角域和窗函数对测量性能的影响.半波长的采样可满足测量的要求,欠采样会侵蚀有效角域范围.虑及综合口径的等效投影,完善了有效角域的估计公式.驻相法分析了近远场变换对近场的近似局部依赖性.并且使用窗函数来抑制扫描截断误差,提高测量精度.最后,通过数值算例验证了测量方法和性能分析的有效性.
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| 关 键 词： | 近场 雷达散射截面 微波暗室 |
| 收稿时间： | 2007-08-30 |
Simulation on bistatic RCS measurement method in anechoic chamber |
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| Li Zhiping,He Guoyu.Simulation on bistatic RCS measurement method in anechoic chamber[J].Journal of Beijing University of Aeronautics and Astronautics,2008,34(9):1049-1052. |
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| Authors: | Li Zhiping He Guoyu |
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| Institution: | School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | An method was presented to measure bistatic RCS in anechoic chamber.The target was illuminated by compact antenna test range(CATR),and the scattered field was probed in near-field.The transformation from near-field to far-field(N2F) was analyzed by antennas coupling equation,plane wave synthesis and equivalence theorem.Sampling rate,maximum angle and taper function in N2F were formulated to analyze the measurement's performance.The sampling interval needs to be half wavelength,and undersample will worsen th... |
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| Keywords: | near-field radar cross section (RCS) anechoic chamber |
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