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。
A new DOA estimation method is proposed for Y-shapod 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.
出处
《现代雷达》
CSCD
北大核心
2007年第1期71-75,共5页
Modern Radar
关键词
波达方向估计
阵列信号处理
Y形阵
特征分解
direction of arrival estimation
array signal processing
Y-shapod array
eigendecomposition
