| 基于实值特征值分解的求根MUSIC算法 |
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| 引用本文： | 郑春弟,解春维,李有才. 基于实值特征值分解的求根MUSIC算法[J]. 数据采集与处理, 2010, 25(2) |
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| 作者姓名： | 郑春弟 解春维 李有才 |
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| 作者单位： | 1. 海军兵种指挥学院舰艇装备教研室,广州,510430
2. 西安科技大学通信与信息工程学院,西安,710054 |
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| 摘 要： | 针对非圆信号DOA估计问题,提出了一种基于实值特征值分解(Eigenvalue decomposition,EVD)的求根MUSIC算法.首先利用非圆信号为实值信号的特点,将阵列上的接收数据及其共轭用欧拉公式转换为实值正弦与余弦数据,然后将正弦与余弦数据进行串联,从而扩展了数据维数.由于采用实值矩阵的EVD,因此在EVD阶段的运算量简化为复值EVD的1/4.根据EVD后获得的信号与噪声子空间的特点,对噪声子空间和导向矩阵进行重构以便于可以使用求根MUSIC算法获取对DOA的估计.仿真实验验证了本文算法的有效性.
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| 关 键 词： | 阵列信号处理 子空间类方法 DOA估计 求根MUSIC |
Root MUSIC Algorithm Based on Real-Valued Eigenvalue Decomposition |
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| Zheng Chundi,Xie Chunwei,Li Youcai. Root MUSIC Algorithm Based on Real-Valued Eigenvalue Decomposition[J]. Journal of Data Acquisition & Processing, 2010, 25(2) |
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| Authors: | Zheng Chundi Xie Chunwei Li Youcai |
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| Affiliation: | Zheng Chundi1,Xie Chunwei2,Li Youcai1(1.Staffroom of Shipboard Weapons Equipment,Naval Arms of Comm, Academy,Guangzhou,510430,China,2.School of Communication , Information Engineering,Xi'an University of Science , Technology,Xi'an,710054,China) |
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| Abstract: | A computationally efficient real-valued eigenvalue decomposition root MUSIC-like algorithm is proposed to estimate the direction of arrival(DOA) problem of non-circular sources.Firstly,the complex-valued measurements are transformed into real sine and cosine data by using the properties of non-circular sources and Euler equation.Then,by concatenating the sine and cosine data in tandem,a real-valued matrix with doubled dimensions of the row is obtained,thus doubling the number of available sensors.And the co... |
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| Keywords: | array signal processing subspace-based method direction-of-arrival estimation root MUSIC |
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