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基于Toeplitz矩阵的互耦误差下相干信号源DOA估计

Keywords: 互耦,相干源,Toeplitz矩阵

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Abstract:

在阵列互耦误差存在的前提下,针对多组相干信号源和若干非相干信号源并存的情况,提出了一种对信号源进行准确估计的算法.算法首先估计阵列的互耦参数,并利用此互耦参数对阵列接收数据进行补偿;然后利用Toeplitz矩阵重构法对相干信号进行解相干;最后利用MUSIC算法估计各个信号源的来波方向(directionofarrival,DOA).实验结果表明,算法有效解决了互耦的影响,避免了阵列损失,实现了间距很小信源的准确估计.

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