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。
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.
出处
《电子与信息学报》
EI
CSCD
北大核心
2007年第12期2832-2835,共4页
Journal of Electronics & Information Technology
关键词
均匀圆阵
DOA估计
模式激励
相干信源
Uniform Circular Array （UCA）
DOA estimation
Mode excitation method
Coherent signals
