| 多径环境下循环平稳信号的波达方向估计方法 |
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| 引用本文： | 郭艳,刘学亮,李宁,王金龙.多径环境下循环平稳信号的波达方向估计方法[J].北京邮电大学学报,2009,32(1):43-46. |
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| 作者姓名： | 郭艳 刘学亮 李宁 王金龙 |
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| 作者单位： | 1. 解放军理工大学,理学院,南京,210007
2. 解放军理工大学,通信工程学院,南京,210007 |
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| 基金项目： | 国家高技术研究发展计划(863计划),国家自然科学基金 |
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| 摘 要： | 结合虚拟平移技术,提出了虚拟平移循环自相关和虚拟平移循环互相关2种算法.该算法克服了循环多重信号分类及空间平滑类算法的不足,在不影响阵列孔径的情况下,使阵列可估计的相干期望信源数目达到 M-1(M为阵元数).。理论分析和仿真试验证实,该算法适用于相干信号和非相干信号的波达方向估计。
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| 关 键 词： | 循环平稳 相干信号 波达方向 虚拟平移 |
| 收稿时间： | 2008-4-4 |
| 修稿时间： | 2008-11-4 |
Estimation of Direction-of-Arrival of Cyclostationary Signals in Multipath Propagation Environments |
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| GUO Yan,LIU Xue-liang,LI Ning,WANG Jin-long.Estimation of Direction-of-Arrival of Cyclostationary Signals in Multipath Propagation Environments[J].Journal of Beijing University of Posts and Telecommunications,2009,32(1):43-46. |
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| Authors: | GUO Yan LIU Xue-liang LI Ning WANG Jin-long |
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| Affiliation: | 1.Institute of Sciences;People Laberation Army University of Science and Technology;Nanjing 210007;China;2.Institute of Communication Engineering;China |
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| Abstract: | Two approaches called virtual moving-cyclic autocorrelation (VM-CAC) and virtual moving-cyclic crosscorrelation (VM-CCC) based on conjugate Cyclic MUSIC is proposed for a uniform linear array. Compared with spatial smoothing scheme, the coherent signals that caused rank deficiency are decorrelated without reducing the effective aperture of the array. Simulation results are presented that a higher resolution performance will be achieved relative to the conventional ones.. |
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| Keywords: | cyclostationarity coherent signals direction-of-arrival virtual moving |
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