| 一种谐波信号源DOA估计的新算法 |
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| 引用本文： | 刘建卫,陈辉. 一种谐波信号源DOA估计的新算法[J]. 空军雷达学院学报, 2011, 25(1): 1-5. DOI: 10.3969/j.issn.1673-8691.2011.01.001 |
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| 作者姓名： | 刘建卫 陈辉 |
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| 作者单位： | 空军雷达学院研究生管理大队,武汉,430019 |
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| 摘 要： | 针对传统谐波信号源DOA估计中算法复杂、计算量大的问题,提出了一种互相关序列的修正协方差AR谱估计（CCS-MC）算法.CCS-MC算法首先利用均匀线阵的空域信号与复正弦信号互相关得到一个序列,然后对其进行功率谱估计,得出信号源的波达方向.与ISM、CSM算法相比,该算法不需要DFT变换、构造聚焦矩阵,大大降低了计算量,同时它在对相干信号源进行DOA估计时有效避免了阵列孔径的损失.仿真结果表明：该算法可以精确地估计出谐波信号源的波达方向,同时有效解决了CCS-PL算法所存在的严重角度模糊问题,改善了低信噪比条件下的DOA估计性能,更适合于谐波信号源的DOA估计.
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| 关 键 词： | DOA估计 谐波信号源 互相关序列 |
A New Algorithm of DOA Estimation for Harmonic Sources |
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| LIU Jian-wei,CHEN Hui. A New Algorithm of DOA Estimation for Harmonic Sources[J]. Journal of Air Force Radar Academy, 2011, 25(1): 1-5. DOI: 10.3969/j.issn.1673-8691.2011.01.001 |
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| Authors: | LIU Jian-wei CHEN Hui |
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| Affiliation: | LIU Jian-wei1,CHEN Hui2(1.Departtment of Graduate Management,AFRA,Wuhan 430019,China,2.No.3 Department,China) |
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| Abstract: | This paper aims to the issues of complex algorithm and mass computation in traditional DOA estimation for harmonic sources,and presents a new algorithm of AR spectrum estimation of cross-correlation sequence with modified covariance(CCS-MC),where a sequence is constructed by using the cross-correlation of space domain signal in the uniform linear array and complex sinusoidal signal,and then the DOA of signal source is obtained by estimating the power spectrum of the sequence.Compared with the ISM and CSM al... |
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| Keywords: | DOA estimation harmonic sources cross-correlation sequence |
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