| 随机误差对数字波束形成系统性能的影响 |
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| 引用本文： | 杨蓓蓓.随机误差对数字波束形成系统性能的影响[J].电子工程师,2010,36(3):9-12. |
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| 作者姓名： | 杨蓓蓓 |
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| 作者单位： | 中国电子科技集团公司第38研究所,安徽省合肥市,230031 |
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| 摘 要： | 文中针对数字波束形成系统，推导出阵列天线的通道幅相误差和阵元位置误差对波束方向图的第一副瓣、零陷深度及半功率波束宽度影响的一般规律。并且对数学公式进行了详细的推导。分析与仿真结果表明：随机误差对波束方向图性能的影响主要与天线阵列的权系数和阵元数目有关。
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| 关 键 词： | 天线方向图 幅相误差 位置误差 敏感度 第一副瓣 半功率波束宽度 |
Effect of Random Error on the Performance of Digital Beam Forming System |
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| YANG Beibei.Effect of Random Error on the Performance of Digital Beam Forming System[J].Electronic Engineer,2010,36(3):9-12. |
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| Authors: | YANG Beibei |
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| Affiliation: | YANG Beibei (The 38th Research Institute of CETC, Hefei 230031, China) |
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| Abstract: | For the digital beam forming system, this paper derives the general law of the effects of the variance of amplitude and phase between each channel and the error of element position on first sidelobe, null steering and half-power beamwidth of the antenna pattern. The mathematical formulas are also derived in detail in this paper. The results of analysis and simulation indicate that effects of random error on the performance of antenna pattern are mainly decided by the weight coefficient and element number of antenna array. |
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| Keywords: | antenna pattern amplitude and phase errors position error sensitivity first sidelobe halfpower beamwidth |
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