宽带相干信源DOA估计及其阵列校正方法
doi: 10.3724/SP.J.1146.2007.00051
The Method of DOA Estimation and Array Calibration for Wideband Coherent Sources
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摘要: 本文针对宽带相干信号，应用正交投影子空间算法提出了一种新的DOA估计方法。该方法不需要相干信号子空间方法(CSS)中聚汇矩阵所需的DOA先验信息，也不需要插值法中对扇区的划分 。并且应用Toeplitz 对角化方法修正数据协方差矩阵，使该方法能够处理相干信号和对阵列位置误差进行校正。仿真实验结果表明了该方法的有效性。Abstract: In this paper, a new method is proposed to estimate the DOA of wideband coherent signals. The orthogonality of projected subspaces method is used to estimate DOA. This method does not require the primary information of DOA for focusing matrix and need not the sector dividing of interpolated method. And it can deal with coherent signals and array calibration by using the Toeplitz method to modify the data covariance matrix. The simulation results illustrated the effectiveness of this method.
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