| 随机误差对阵列天线副瓣电平的影响分析 |
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| 引用本文： | 沈齐,刘波. 随机误差对阵列天线副瓣电平的影响分析[J]. 微波学报, 2006, 22(Z1) |
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| 作者姓名： | 沈齐 刘波 |
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| 作者单位： | 1. 北京理工大学电子工程系,北京,100081;空军装备研究院,北京,100085
2. 空军装备研究院,北京,100085;南京电子技术研究所,南京,210013 |
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| 摘 要： | 采用三角函数近似和幂级数展开近似等数值方法,推导出阵列天线中的阵元随机误差(包括幅度误差和相位误差)对天线副瓣电平产生影响的一般规律,代替难以得到的解析解。分析结果表明:随机误差对副瓣电平的影响与阵元数目和阵元幅值分布有关,而且不同的随机误差近似计算方法得到的结果亦有所不同,在不存在解析解的条件下,只有综合比较各种方法,才能客观估计随机误差对天线副瓣性能的影响。
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| 关 键 词： | 阵列天线 随机误差 副瓣电平 |
An Analysis of Relationship Between Random Error and Relative Sidelobe Level |
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| SHEN Qi,LIU Bo. An Analysis of Relationship Between Random Error and Relative Sidelobe Level[J]. Journal of Microwaves, 2006, 22(Z1) |
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| Authors: | SHEN Qi LIU Bo |
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| Abstract: | The two approximate methods,i.e.trigonometric function and power series expansion,are adopted to estimate the Relative Sidelobe Level(RSL) aroused from element random errors of antenna array,including amplitude error and phase error.The derived approximate formulas are effective substitute means to the unknown close-form formulas.It is shown that the RSL is related to the number of elements and distribution of amplitude,and more important,different results of RSL are derived from different approximate formulas.In general,we must compare the results of different approximate formulas to estimate the RSL precisely. |
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| Keywords: | Antenna array Random error Sidelobe level |
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