A Method for DOA Estimation in the Presence of Unknown Nonuniform Noise
A Method for DOA Estimation in the Presence of Unknown Nonuniform Noise
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DOI：
10.1163/156939308787537856
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发表时间：
2008-01
影响因子：
1.3
通讯作者：
Bin Liao;Guisheng Liao;Jun Wen
中科院分区：
文献类型：
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作者：
Bin Liao;Guisheng Liao;Jun Wen
在本文中，我们提出了一种在存在协方差为任意对角矩阵的未知非均匀白噪声的情况下估计到达方向（DOA）的新方法。这种新方法可以根据接收数据的阵列协方差矩阵的结构来有效地估计噪声协方差矩阵。通过从阵列协方差矩阵中减去噪声协方差矩阵可以消除未知非均匀白噪声对DOA估计的负面影响，然后可以应用传统的多信号分类(MUSIC)算法。计算机仿真验证了该方法的有效性和优点。
In this paper, we present a new method for direction-of-arrival (DOA) estimation in the presence of unknown nonuniform white noise whose covariance is an arbitrary diagonal matrix. This new method can estimate the noise covariance matrix effectively based on the structure of array covariance matrix of the received data. The negative effect of the unknown nonuniform white noise on the DOA estimation can be eliminated by subtracting the noise covariance matrix from the array covariance matrix, then the conventional Multiple Signal Classification (MUSIC) algorithm can be applied. Computer simulations are conducted to show the validity and advantage of this method.