| 应用FRFT的矢量水听器阵方位估计 |
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| 引用本文： | 李秀坤,李婷婷,尹世梅.应用FRFT的矢量水听器阵方位估计[J].哈尔滨工程大学学报,2010,31(6). |
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| 作者姓名： | 李秀坤 李婷婷 尹世梅 |
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| 作者单位： | 哈尔滨工程大学,水声技术国防科技重点实验室,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家级重点实验室基金资助项目 |
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| 摘 要： | 采用FRFT方法研究矢量水听器阵的宽带信号多目标方位估计问题.进行了与FRFT的二维矢量水听器线阵方位估计算法相结合的理论推导与仿真实验.研究证明,采用二维矢量水听器阵可以实现全空间无模糊定向,该方法在处理多源信号时可以避免交叉项的干扰,对于宽带信号的处理,不需要进行频率搜索或频率聚焦变换就可以进行方位估计.该方法在信噪比不低于-10 dB时都具有较好的估计精度.
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| 关 键 词： | 波达方位估计 矢量水听器阵 |
Estimating direction of arrival with a vector-sensor array through FRFT |
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| LI Xiu-kun,LI Ting-ting,YIN Shi-mei.Estimating direction of arrival with a vector-sensor array through FRFT[J].Journal of Harbin Engineering University,2010,31(6). |
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| Authors: | LI Xiu-kun LI Ting-ting YIN Shi-mei |
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| Affiliation: | LI Xiu-kun,LI Ting-ting,YIN Shi-mei(National Laboratory of Underwater Acoustic Technology,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | Problems in direction of arrival(DOA) estimation with a wide-band multi-source based vector-sensor array are the main focus of this paper.Both the DOA estimation algorithm and simulation results were presented by a combination of the fractional Fourier transform(FRFT) method and a two-dimensional vector hydrophone linear array.The studies showed that a two-dimensional vector hydrophone array can have no ambiguity of DOA estimation.Interpolation problems can be effectively avoided when dealing with multi-sou... |
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| Keywords: | FRFT |
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