通过虚拟阵元进行DOA估计，一个计算声子晶体结构的一维传递矩阵法,数学方法是部分子空间法。- Conducted through virtual array DOA estimation, A one-dimensional transfer matrix method to calculate the phonon crystal structure, Mathematics is part of the subspace.

DOA矩阵法二维DOA估计，基于金梁, 殷勤业. 时空DOA矩阵方法[J]. 电子学报, 2000, 28(6):8-12.(Two-dimensional DOA estimation with DOA matrix method.)