均匀圆阵MIMO雷达中的DOA估计新算法

摘要

当前多输入多输出(MIMO)雷达波达方向(DOA)估计的研究均以传统算法为依托,无法估计具有循环平稳特性的信号的波达方向.因上述一类信号广泛运用于信号处理领域,为改进传统算法,提出了一种基于循环统计量的MIMO雷达DOA估计新算法,均匀圆阵可进行360度全方位、无模糊的方位估计,可同时提供方位角和俯仰角信息,并在均匀圆阵中进行了新算法的理论推导,实现了在非平稳信号环境中对俯仰角和方位角同时估计.%The multiple input and multiple output ( MIMO) radar cannot estimate the arrival direction of signals with cyclostationarity characteristics currently when using the traditional algorithms. Then these signals are widely used in signal processing field. To solve this problem, this paper proposed a new algorithm based on circulation statistics for MIMO radar; uniform circle array can estimate both angle of pitch and azimuth at the same time all-around and without fuzzy. So the paper deduced the new algorithm based on uniform circle array MIMO radar and achieved the purpose of estimating the DOA of non—cyclostationary signals.