中文摘要：

针对冲击噪声环境中信号源的高分辨二维波达方向（DOA）估计问题，提出了一种适合任意阵形的基于联合对角化分数低阶空时（ST）相关矩阵的二维DOA估计方法。该方法先对分数低阶空时矩进行采样构建伪快拍数据矩阵，然后对两个时延分数低阶空时矩阵进行联合对角化处理。其无需二维谱峰搜索和参数配对，在低信噪比下对强冲击噪声具有更好的抑制作用，适合存在一维角度兼并的情况。仿真结果证明了该方法的有效性。

英文摘要：

A novel joint diagonalization spatio-temporal fractional lower order moments direction of arrival （DOA） matrix method is proposed to estimate the 2-D DOA of uncorrelated narrowband signals with arbitrary array configuration in the presence of impulsive noise. The new method first constructs pseudo data matrix by collecting the pseudo snapshots of fractional lower order spatio-temporal （ST） matrix, then performs a joint diagonalization fractional lower-order spatio-temporal moment process. It can handle sources with common 1-D angles with neither peak searching nor parameter pairing. Simulation results show that the proposed method is effective.