一种新的聚焦类宽带DOA估计算法  

A new algorithm for wideband DOA estimation using focusing matrices

作　　者：曹金亮[1] 刘志文[1] 徐友根[1] 

机构地区：[1]北京理工大学信息与电子学院,北京100081

出　　处：《航天电子对抗》2010年第3期44-47,共4页Aerospace Electronic Warfare

基　　金：国家自然科学基金(60672084;60602037;0736006)

摘　　要：基于导向矢量矩阵的初等变换,给出了一种新的聚焦类宽带源波达方向(DOA)估计算法。新算法构造聚焦矩阵时不需要矩阵分解运算,从而使聚焦过程运算量更小。在理想条件下,新方法构造的聚焦矩阵可以在各个频率点实现完美聚焦。分析表明,新算法运算量要小于其它聚焦类宽带DOA估计算法。计算机仿真验证了该算法的有效性。Based on the elementary transformation of the location matrices, a new focusing algorithm for wideband DOA estimation is proposed. The new algorithm constructs the focusing matrices without any matrix decomposition operation and has a smaller computational cost than the other focusing methods. In an ideal case, perfect focusing can be achieved at all frequency bins. The simulation results demonstrate the effectiveness of the new algorithm.

关 键 词：波达方向估计 宽带信号源 聚焦 相干信号子空间方法 

分 类 号：TN911.7[电子电信—通信与信息系统]