摘要
根据空间平滑理论准则,提出了一种基于阵列接收数据矩阵重构的宽带相干源方位(DOA)估计算法。将宽带阵列数据分解为若干窄带数据,对每一子带进行空间平滑处理后的数据矩阵重构;再由构造的聚焦矩阵对其进行处理,最终得到平均的阵列协方差矩阵。由子空间方法处理得到信号的方向估计,仿真实验证明了该方法的有效性。
According to the theory of spatial smoothing, a new algorithm which is based on data matrix reconstruction for Direction-Of-Arrival （DOA） estimation in the presence of wideband coherent signals is presented. Dividing broadband data into a number of narrow-band data, then reconstruct each sub-band data matrix after dealing them with spatial smoothing. Finally, get the average array covariance matrix through the processing of focusing matrix, also estimate the direction of signals by the signal-subspace method. Simulation experiments prove the effectiveness of the method.
出处
《火力与指挥控制》
CSCD
北大核心
2010年第7期50-52,共3页
Fire Control & Command Control
基金
河南省自然科学基金资助项目(0411010400)
关键词
宽带相干信号
空间平滑
矩阵重构
聚焦矩阵
方位估计
wideband coherent signal
spatial smoothing
matrix reconstruction
focusing matrix
direction of arrival estimation
