| 窄带假设对GNSS天线阵抗干扰性能评估的影响分析 |
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| 引用本文： | 聂俊伟,葛锐,李敏,王飞雪.窄带假设对GNSS天线阵抗干扰性能评估的影响分析[J].国防科技大学学报,2011,33(5):128-133. |
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| 作者姓名： | 聂俊伟 葛锐 李敏 王飞雪 |
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| 作者单位： | 国防科技大学电子科学与工程学院,湖南长沙,410073 |
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| 摘 要： | 传统方法基于窄带假设条件下的模型对天线阵抗干扰性能进行评估,存在分析精度低的问题.新一代全球卫星导航信号带宽的增加使得宽带效应更为明显,影响将更为严重.因此,窄带假设所造成的影响需要重新审视.论文结合当前普遍采用的数字域加权处理方式,推导出天线阵处理频率响应的精确模型,得出阵列处理响应在频域上可表示为空域导向矢量与时间...
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| 关 键 词： | GNSS 变频处理 抗干扰天线阵 窄带假设 性能评估 |
| 收稿时间： | 2010/12/20 0:00:00 |
The Influence Analysis of Narrowband Hypothesis to GNSS Array Anti-jamming Performance Evaluation |
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| NIE Junwei,GE Rui,LI Min and WANG Feixue.The Influence Analysis of Narrowband Hypothesis to GNSS Array Anti-jamming Performance Evaluation[J].Journal of National University of Defense Technology,2011,33(5):128-133. |
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| Authors: | NIE Junwei GE Rui LI Min and WANG Feixue |
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| Institution: | NIE Jun-wei,GE Rui,LI Min,WANG Fei-xue(College of Electronic Science and Engineering,National Univ.of Defense Technology,Changsha 410073,China) |
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| Abstract: | The traditional method analyzes the anti-jamming biases by using narrow-band model Hypothesis.On the other hand,next-generation GNSS signals using wider bandwidth make the broadband effect more obviously.Therefore,the impact of narrow-band assumptions needs to be re-examined.This research derives the precise model under the case of DBF processing,and the conclusion is that the array response equals to the inner product of spatial steer vector and the Kroneck product of time steer vector and weights of taps.... |
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| Keywords: | Global Navigation Satellite Systems(GNSS) freq down conversion anti-jam antenna array narrowband assumption performance evaluation |
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