基于高阶统计的空间信号频率与二维到达方向估计

Spatial Signal Frequency and 2-D Direction of Arrival Estimation Based on High Order Statistics

基于一个线性阵列、两个孤立阵元以及输出信号四阶累积量，本文提出了一种多个空间窄带信号频率、到达方位角和仰角估计方法．方法不仅使它们的估计无需谱峰搜索且自动配对，而且使阵列的阵元数大大减小，适合任意高斯噪声环境．计算机模拟结果证实了方法的可行性．

Based on a linear array and two isolation elernents, and fourth order cumulant of array output signal,a novel approach for estimating multiple spatial narrow-band signal frequencies and 2-D directions of arrival ispresented in the paper. Without any spectral peak searching and pairing among parameters, it can reduce number of array element largely and be employed to additive arbitrary Gaussin noise as well. Computer simulationconfirms its availability.