基于四阶累量的宽频段信号三维参数分离估计

The Three Dimensional(3-D)Separable Parameters Estimation of Signals in Wide Frequency Band Based on Four order Cumulant

基于空间立体阵及坐标原点处阵元接一延时器的阵列结构和四阶累积量 ,提出了一种宽频段内多个空间窄带信号频率和全方位角 ,即方位角范围 [0 ,2π]、信号与 z轴夹角 [0 ,π]的三维参数可分离估计方法。该方法采用配对特征向量寻找配对特征值 ,从而实现空间信号三维参数的分离和配对 ,且该方法具有对阵列流形不敏感的特点。计算机仿真实验表明了这种方法的有效性。

Based on a special time delaying element on spatial 3 D array and four order cumulant,a method is presented in this paper for the separable estimation multiple spatial narrow band signal frequencies,that are the azimuth angle(0~2π) and the angle between the signal and Z axis(0~π).Through pairing signature vectors it can lead to pairing eigenvalue,and result in separating and pairing of 3 D separable parameters.Moreover,it is insensitive to the manifold.A computer simulation has proved its availability.