摘要
将窄带传播算子方法引入宽带源测向的相干信号子空间处理中。首先提出一种新的聚焦矩阵的计算方法；该方法不需要进行角度预估，也不需要任何矩阵分解，对信号方向不敏感，运算量小。在此基础上，根据相干信号子空间处理方法的原理，对聚焦的空间协方差矩阵作传播算子方法的处理。整个过程避免了矩阵分解，因而运算量降低，仿真结果证明了该方法的有效性。
The narrow band propagator method is introduced to the wideband signal-subspace processing in the direction finding problem. A new technique is presented to compute the focusing matrices. It needs no direction pre-estimationor matrix decomposition, so the focusing matrices are insensitive to the signals' directions and the computation is simple.Then, the propagator method is extended to the focused covariance matrix to find the directions of the sources. Thewhole estimation process avoids the rather expensive matrix decomposition. The results of simulations support theeffectiveness of the new method.
出处
《声学学报》
EI
CSCD
北大核心
2000年第2期146-149,共4页
Acta Acustica
