[关键词]
[摘要]
提出了一种适用于Y形阵的空时二维波达方向估计方法,在低信噪比下实现了无模糊的二维波达方向估计。该方法利用了Y形阵的特性,采用空时二维处理,通过采样数据归一化、加权处理和参数回代的方法解决了前后向模糊问题,具有较好的稳定性和较小的估计方差。由于在低信噪比下的优良性能,该算法适合于复杂电磁环境下的应用。仿真结果证明了方法的有效性。
[Key word]
[Abstract]
A new DOA estimation method is proposed for Yshaped array.With the array geometry characteristics,and adopting space-time processing and sampled data normalizing and weighting,this method solves the fuzzy problem of backward and forward directions.The method has good stability and low estimation variance even if the signal-to-noise ratio is quite low.Simulation results show the effectiveness of the method.
[中图分类号]
TN957
[基金项目]
