| 多普勒信号的稳健盲自适应波束形成 |
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| 引用本文： | 廖桂生,刘宏清,敖珺.多普勒信号的稳健盲自适应波束形成[J].电波科学学报,2006,21(5):697-700,707. |
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| 作者姓名： | 廖桂生 刘宏清 敖珺 |
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| 作者单位： | 西安电子科技大学雷达信号处理重点实验室,陕西,西安,710071;西安电子科技大学雷达信号处理重点实验室,陕西,西安,710071;西安电子科技大学雷达信号处理重点实验室,陕西,西安,710071 |
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| 摘 要： | 针对假设的多普勒频率和真实的多普勒频率之间的误差会导致盲波束形成的性能急剧的下降这一事实. 首先分析了存在多普勒误差时的最小均方误差准则意义下的盲自适应波束形成的性能, 然后提出了一种有效的算法来对抗多普勒误差, 该算法是一迭代过程, 可以在线估计出真实的多普勒频率. 计算机仿真验证了提出算法的有效性.
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| 关 键 词： | 盲自适应波束形成 多普勒频率误差 相控阵多普勒雷达 稳健性 |
| 文章编号： | 1005-0388（2006）05-0697-05 |
| 收稿时间： | 2005-10-15 |
| 修稿时间： | 2005-10-15 |
Robust blind adaptive beamforming for Doppler signals |
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| LIAO Gui-sheng,LIU Hong-qing,AO Jun.Robust blind adaptive beamforming for Doppler signals[J].Chinese Journal of Radio Science,2006,21(5):697-700,707. |
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| Authors: | LIAO Gui-sheng LIU Hong-qing AO Jun |
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| Abstract: | Blind adaptive beamforming suffers from performance degradation in the presence of mismatch between the actual and presumed Doppler frequency of the desired signal. In this paper, the performance of the algorithm by MMSE (Minimum Mean Square Error) criterion in the presence of mismatch of Doppler frequency is firstly evaluated, then, a novel robust scheme, in which estimated Doppler frequency on-line, is proposed to alleviate the degradation due to Doppler frequency error. Computer simulations show the validity of the proposed method. |
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| Keywords: | blind adaptive beamforming Doppler frequency error (DFE) phased array Doppler radar robustness |
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