基于MIMO圆阵雷达的二维DOA估计新算法  

New Algorithm of 2-D DOA Estimation Based on MIMO Uniform Circle Array Radar

作　　者：李新潮[1] 郭艺夺[1] 张永顺[1] 沈堤[1] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800

出　　处：《上海航天》2010年第5期28-31,共4页Aerospace Shanghai

摘　　要：基于对均匀圆阵导向矢量的分析,将四元均匀圆阵作为多输入多输出(MIMO)雷达的发射阵,通过构造相应的二阶统计量并对其进行联合对角化获得了目标方位角和俯仰角的闭式解,以实现存在角度兼并时目标的二维到达方向(DOA)的估计,并保持原DOA矩阵方法无需二维谱峰搜索和参数配对等优点。仿真结果证明算法正确、可行。Based on the analysis of the steering vector of uniform circular array（UCA）,the closed-form solution of the azimuth and elevation angle was acquired by constructing the corresponding to the two order statistics and joint-diagonalizing them when UCA with four sensors was used as the transmitting array of multiple input multiple output（MIMO） radar in this paper.The 2-D DOA estimation was realized by the proposed algorithm when angle ambiguity was exited,in that the advantage of DOA matrix method with neither pair matching nor peak searching was preserved.The simulation results showed that this method was correct and feasible.

关 键 词：MIMO雷达 均匀圆阵 DOA矩阵法 联合对角化 角度兼并 

分 类 号：TN957[电子电信—信号与信息处理]