利用空时相关矩阵酉变换估计波达方向

DOA estimation in correlated noise fields using unitary spatio-temporal correlation matrices

针对传统波达方向(directionofarrival,DOA)估计方法在噪声相干时估计性能下降的现象,提出一种基于空时相关矩阵酉变换的UST MUSIC算法对相干噪声场中的DOA进行估计。并通过仿真实验与IU MUSIC和MMUSIC算法进行了比较。实验结果表明该算法的性能优于IU MUSIC和MMUSIC算法,且具有好的稳定性。

The performance of traditional DOA estimation methods becomes worse in the correlated noise fields. A UST-MUSIC algorithm based on unitary spatio-temporal correlation matrices is presented. Comparison between the presented algorithm and the typical existing methods, i.e., IU-MUSIC and MMUSIC algorithms is performed. The experimental results indicate that the performance of the presented UST-MUSIC algorithm is better than that of IU-MUSIC and MMUSIC, and has good robustness to array errors and small snapshots.