摘要
给出了多输入多输出(multiple-input multiple-output,MIMO)阵列的阵列信号模型。针对信号为非圆信号的形式,提出了一种在MIMO阵列中基于非圆信号的共轭多重信号分类方法(multiple-input multiple-out-put conjugate multiple signal classification,MIMO CMUSIC)。这种方法充分利用非圆信号的特点,从阵列接收数据构造共轭对称的Toeplitz矩阵得到伪协方差矩阵,然后用常规MUSIC方法进行处理。仿真结果表明,与常规MUSIC方法相比,在只需要一次或者少次快拍下,此方法在MIMO阵列中能够分辨多个目标,性能远优于常规的MIMO MUSIC方法。
An improved MUSIC method for non-circular sources in multiple-input multiple-output（MIMO） array signal model is proposed to estimate the directions of arrival.The proposed method exploits the characteristics of non-circular sources to construct a conjugate symmetric Toeplitz matrix from received data vectors so as to form a pseudo covariance matrix,then the source directions of arrival are estimated by techniques similar to the MUSIC method.Simulation results show that the proposed method can resolve multi-targets by using only one or a few snapshots in the MIMO array.And its performance is better than the traditional MIMO MUSIC method.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2010年第8期1596-1599,共4页
Systems Engineering and Electronics
基金
国家自然科学基金(60972152)
国家重点实验室基金(9140C2304080607)
西北工业大学基础研究基金(NPU-FFR-W018102)
西北工业大学博士论文创新基金(CX201002)资助课题
关键词
阵列信号处理
波达方向
MUSIC方法
多输入多输出阵列
array signal processing
direction of arrival（DOA）
multiple signal classification（MUSIC） method
multiple-input multiple-output（MIMO） array
