宽带非高斯信号的二维波达方向估计方法

A Method to Wideband Non-Gaussian 2-D DOA Estimation

该文提出了一种解决宽带非高斯信号二维波达方向估计的方法.该方法利用相干信号子空间方法 把宽带的阵列频域数据四阶累积量聚焦到同一个参考频段下,然后利用基于信号空时特征结构的时空DOA 矩阵方法来进行二维DOA估计。理论上证明该方法在高斯噪声环境下对宽带非高斯信号都具有很好的估 计性能,通过计算机仿真也验证了该方法的有效性。

A method is proposed to solve the estimation of wideband non-Gaussian 2-D DOA in this paper. Coherent Signal-subspace Method(CSM) is used to focus the higher order statistics signal subspace at different frequency bins into a predefined subspace, then space-time DOA matrix method is used to estimate the 2-D DOA. The study and the simulation analysis indicate that the method is efficient in the wideband Gaussian noise environment.