| 均匀圆阵DOA估计的一种酉变换方法 |
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| 引用本文： | 徐德琛,刘志文,齐晓东,徐友根.均匀圆阵DOA估计的一种酉变换方法[J].无线电工程,2010,40(6):14-16. |
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| 作者姓名： | 徐德琛 刘志文 齐晓东 徐友根 |
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| 作者单位： | 1. 北京理工大学,信息与电子学院,北京,100081
2. 北京理工大学,信息与电子学院,北京,100081;中国电子科技集团公司第五十四研究所,河北,石家庄,050081 |
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| 摘 要： | 针对基于均匀圆阵的子空间类DOA估计算法包含大量复数运算、硬件实现复杂的问题,提出了阵元空间中的一种酉变换方法。该方法利用阵列的中心对称性将协方差矩阵和导向矢量分别转化为实对称阵和实矢量,从而大大降低了硬件实现复杂度。基于该酉变换的MUSIC算法在性能上优于传统的MUSIC算法和均匀圆阵模式空间酉MUSIC算法。
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| 关 键 词： | 均匀圆阵 中心对称性 DOA估计 酉变换 |
A Unitary Transformation Method for DOA Estimation with Uniform Circular Array |
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| XU De-chen,LIU Zhi-wen,QI Xiao-dong,XU You-gen.A Unitary Transformation Method for DOA Estimation with Uniform Circular Array[J].Radio Engineering of China,2010,40(6):14-16. |
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| Authors: | XU De-chen LIU Zhi-wen QI Xiao-dong XU You-gen |
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| Affiliation: | XU De-chen1,LIU Zhi-wen1,QI Xiao-dong1,2,XU You-gen1(1.School of Information , Electronic,Beijing Institute of Technology,Beijing 100081,China,2.The 54th Research Institute of CETC,Shijiazhuang Hebei 050081,China) |
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| Abstract: | Subspace based DOA estimation algorithms with a uniform circular array (UCA) involve complex computations,which results in high hardware implementation complexity.To solve this problem,a unitary transformation method in element space is proposed.Exploiting the centrosymmetry of UCA,this method makes the covariance matrix and steering vectors real-valued,thus the hardware implementation complexity is significantly reduced;furthermore,the MUSIC algorithm following the unitary transformation performs better th... |
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| Keywords: | uniform circular array centrosymmetry DOA estimation unitary transformation |
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