| 利用近场MVDR双聚焦波束成形方法实现被动测距 |
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| 引用本文： | 薛山花,叶青华,黄海宁,黄勇.利用近场MVDR双聚焦波束成形方法实现被动测距[J].应用声学,2005,24(3):177-181. |
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| 作者姓名： | 薛山花 叶青华 黄海宁 黄勇 |
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| 作者单位： | 中国科学院声学研究所,北京,100080 |
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| 摘 要： | 本文分析了近场环境下基于双聚焦波束成形的水下被动测距方法。通过修正MVDR方向矢量,得到了适用于近场环境的MVDR。仿真实验证明近场MVDR双聚焦波束成形测距方法优于普通波束成形和远场MVDR双聚焦波束成形,能明显减小目标距离估计的模糊区域。在相邻两个日标的定位性能上,MVDR双聚焦波束成形技术也比MVDR单聚焦系统体现出更大的优势,能较好地分辨目标。
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| 关 键 词： | 被动测距 双聚焦波束成形 近场MVDR |
Passive-range estimation using near-field MVDR dual focused beamformers |
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| XUE Shan-Hu,YE Qing-Hu,HUANG Hai-Ning and HUANG Yong.Passive-range estimation using near-field MVDR dual focused beamformers[J].Applied Acoustics,2005,24(3):177-181. |
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| Authors: | XUE Shan-Hu YE Qing-Hu HUANG Hai-Ning and HUANG Yong |
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| Institution: | Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080 |
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| Abstract: | In this paper, passive-range estimation is presented using near-field MVDR dual focused beamformers. Through modifying the parameters of MVDR, we obtain a method suitable for near-field condition. The simulation results show that the method is better than the conventional beamformer method and the far-field MVDR passive-range estimation method. By this method, the ambiguous area can be clearly reduced. |
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| Keywords: | Passive-range estimation Dual focused beamformers Near-field MVDR |
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