基于互质多载频MIMO雷达的DOA估计  

Direction of Arrival Estimation for MIMO Radar with Co-prime Frequencies

作　　者：刘爱华 杨娜 占凯 黄飞 周焯 LIU Aihua;YANG Na;ZHAN Kai;HUANG Fei;ZHOU Zhuo(Shanghai Radio Equipment Research Institute,Shanghai 201109,China)

机构地区：[1]上海无线设备研究所,上海201109

出　　处：《制导与引信》2022年第2期13-18,共6页Guidance & Fuze

基　　金：上海市自然科学基金(19ZR1453700)。

摘　　要：为在多输入多输出(multiple input multiple output,MIMO)雷达接收通道数量受限的情况下获得较好的角度分辨力,利用互质多载频在互质空间构建等效阵列,提升MIMO雷达的等效孔径及阵列自由度。基于多载频MIMO雷达阵列接收信号的互质空间信号模型,提出了一种联合求根的互质空间单快拍波达方向(direction of arrival,DOA)估计方法,以充分利用多载频互质空间等效阵列的孔径和自由度。仿真结果证明了所提算法的有效性。To obtain a better angular resolution for the multiple input multiple output(MIMO)radar system with a limited number of physical array elements,multiple co-prime frequencies are used to obtain an equivalent co-prime array with an enlarged aperture and degree of freedom(DOF).Using the co-prime array receiving data model for the multiple frequencies MIMO radar array,a combined root seeking DOA algorithm with a single snapshot in the coprime domain is proposed to make most of the aperture and DOF for the equivalent co-prime array.Simulation results are provided to confirm the validity of the proposed method.

关 键 词：互质多载频 多输入多输出 波达方向估计 

分 类 号：TN911.72[电子电信—通信与信息系统]