摘要
基于辅助矢量基提出了一种子空间DOA估计算法。该算法通过辅助矢量滤波器得到一组信号子空间归一化正交基,计算出噪声子空间矩阵,即可得到信源的空间谱。整个过程不需要特征值或奇异值分解运算,理论上计算复杂度较以前算法明显减小。仿真实验表明新算法性能不仅优于MUSIC算法,而且当存在相关信源,输入信噪比或快拍数很大时也优于辅助矢量DOA算法。
A simplified direction of arrival （DOA） approach based on an auxiliary-vector is proposed. The noise subspace matrix is derived from a signal subspace basis computed by the orthogonal auxil- iary-vector （AV） filtering algorithm （decomposition is not carried out at all）. Theoretically, this new method is significantly lower in computational complexity. Furthermore, the simulation results show that the new algorithm not only outperforms the MUSIC sources, but also surpasses record size or input SNR is the DOA-AV algorithm for large as well. algorithm for both correlated and uncorrelated correlated sources in performance when data
出处
《电子信息对抗技术》
2011年第2期1-3,40,共4页
Electronic Information Warfare Technology
