基于均匀圆阵的模式空间矩阵重构算法

高书彦; 陈辉; 王永良; 张洋

doi:10.3724/SP.J.1146.2006.00765

基于均匀圆阵的模式空间矩阵重构算法

doi: 10.3724/SP.J.1146.2006.00765

高书彦^①;陈辉,
陈辉,
王永良,
张洋

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出版历程
- 收稿日期: 2006-06-01
- 修回日期: 2006-10-16
- 刊出日期: 2007-12-19

The MODE-TOEP Algorithm Based on Uniform Circular Array

摘要

摘要: 该文提出了一种新的均匀圆阵解相干方法，这里称为模式空间矩阵重构算法(MODE-TOEP)。该算法对均匀圆形阵列(UCA)的输出信号进行模式激励，使其成为模式空间内的虚拟阵列(VULA)；在此基础上重构一个Toeplitz 矩阵，成功地估计出相干源的来波方向。MODE-TOEP算法不需要进行平滑计算，从而减少了计算量。计算机仿真实验表明MODE-TOEP算法比传统的模式空间平滑类算法(MODE-FSS，MODE-FBSS)有更好的估计性能。
- 均匀圆阵;DOA估计;模式激励;相干信源
Abstract: The MODE-TOEP algorithm is proposed to estimate DOA of coherent signals on a Uniform Circular Array (UCA). Firstly, the mode excitation method is used to transform the UCA in element space into a virtual ULA (VULA) in mode space. Then a Toeplitz matrix can be reconstructed to estimate DOA of coherent signals successfully. MODE-TOEP algorithm has less computational burden due to non-spatial smoothing. Simulation results show that MODE-TOEP algorithm is effective and has a better performance compared with conventional MODE-SS algorithm.

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