一种快速双基地MIMO雷达目标角度估计算法  

A Fast Angle Estimation Algorithm for Bistatic MIMO Radar

作　　者：李洪兵[1] 杨海豆 张学礼[1] 田波[1] 郭艺夺[1] 

机构地区：[1]空军工程大学防空反导学院,西安710051

出　　处：《现代雷达》2014年第9期26-29,73,共5页Modern Radar

基　　金：国家自然科学基金资助课题(61372166)

摘　　要：提出了一种双基地多输入多输出雷达目标收发方位角估计的基于多级维纳滤波器的波束空间ESPRIT(MSWF-BESPRIT)算法。该算法可重构受波束空间变换破坏的发射和接收阵列旋转不变特性,从而可利用ESPRIT方法来得到对目标波离方向和波达方向的估计值。相比常规的阵元空间ESPRIT(E-ESPRIT)算法,所提的MSWF-B-ESPRIT算法由于避免对波束空间变换后的数据进行协方差矩阵估计和特征值分解,且降低了处理数据的维数,所以具有更小的运算量。计算机仿真结果证明了该方法的正确性和可行性。A novel algorithm, which is called MSWF-B-ESPRIT, is proposed to estimate the drection of departures （DODs） and direction of arrivals （DOAs） for bistatic MIMO radar. The proposed algorithm can restore the rotational invariance structure which lost in the beamspace transformation for both the transmit array and receive array, and then the DODs and DOAs can be estimated through ESPRIT. Since it can reduce the dimension of the data and avoid the estimation of data covariance matrix and its eigenvalues composition after beamspace transformation, the proposed algorithm achieves a significant computational saving over the element-sapce ESPRIT （E-ESPRIT） algorithm for bistatic MIMO radar. The correction and efficiency of the proposed algorithm are verified by the computer simulation results.

关 键 词：双基地多输入多输出雷达 波达方向 波离方向 多级维纳滤波器 波束空间 

分 类 号：TN958[电子电信—信号与信息处理]