摘要
阵元增益不一致导致ＥＳＰＲＩＴ算法的波达方向（ＤＯＡ）估计性能恶化．本文提出了一种新的利用子空间旋转不变性（ＳＲＩ）的ＤＯＡ估计算法，将ＤＯＡ信息包含于矩阵的特征值估计中，但对增益幅度误差不敏感．由于未利用增益幅度信息，ＤＯＡ估计结果可能存在模糊性，本文给出了解模糊方法及仿真实验结果．
Recent studies have shown that perfomance of DOA estimation via ESPRIT or other algorithms degrades drastically with a bad knowledge on array manifold. In this paper, a new approach based on subspace rotational invariance (SRI) for DOA estimation with unknown intensity coefficients is proposed. The ambiguous estimation appears in certain cases and must be eliminated. Detailed analysis of ambiguous problem is presented and is illuminated by numerical examples.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2001年第9期1266-1268,共3页
Acta Electronica Sinica
