| 基于信干噪比增益的自适应阵列抗干扰性能分析 |
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| 引用本文： | 许稼,高阳,贾鑫,龙腾. 基于信干噪比增益的自适应阵列抗干扰性能分析[J]. 北京理工大学学报, 2015, 35(7): 720-724. DOI: 10.15918/j.tbit1001-0645.2015.07.013 |
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| 作者姓名： | 许稼 高阳 贾鑫 龙腾 |
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| 作者单位： | 北京理工大学信息与电子学院,北京,100081;装备学院光电装备系,北京,101416 |
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| 摘 要： | 针对自适应阵列现有的抗干扰性能评价指标存在权系数伸缩敏感,难以直观反映后续信号处理性能等缺点,在现有性能指标分析基础上,提出了信干噪比(SINR)增益指标,并给出了均匀线性阵列SINR增益的解析表达式. 新指标具有明确物理含义,可方便比较不同空域滤波器的抗干扰性能,并定量反映抗干扰后续的信号处理性能. 仿真实验结果验证了提出新方法的有效性.
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| 关 键 词： | 自适应阵列 抗干扰 信干噪比增益方向图 信干噪比损失 |
| 收稿时间： | 2014-08-25 |
Anti-Jamming Performance Analysis of Adaptive Array Based on Signal-to-Interference-Noise Ratio Gain |
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| XU Ji,GAO Yang,JIA Xin and LONG Teng. Anti-Jamming Performance Analysis of Adaptive Array Based on Signal-to-Interference-Noise Ratio Gain[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2015, 35(7): 720-724. DOI: 10.15918/j.tbit1001-0645.2015.07.013 |
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| Authors: | XU Ji GAO Yang JIA Xin LONG Teng |
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| Affiliation: | 1.School of Information and Electronic, Beijing Institute of Technology, Beijing 100081, China2.Department of Optical and Electrical Equipment, Academy of Equipment, Beijing 101416, China |
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| Abstract: | The existing performance speculations of adaptive array have some shortcomings like sensitivity of weight scaling or the difficulty of reflecting the successive processing performance. To deal with this problem, a new speculation was proposed, i.e., signal-to-interference-noise ratio (SINR) gain, for evaluating the anti-jamming performance of adaptive array. Besides, the analytic expression of SINR gain was also derived for uniformly linear spaced array. The proposed SINR gain shows a clear physical meaning and can compare the anti-jamming performance for different anti-jamming spatial filters. Furthermore, the successive performance can be directly obtained via the proposed SINR gain. Finally, the results of numerical experiments show the effectiveness of the proposed method. |
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| Keywords: | adaptive array anti-jamming antenna pattern of signal-to-interference noise ratio (SINR) gain SINR loss |
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