基于多维范德蒙德结构的双基地MIMO雷达收发角及多普勒频率联合估计  

Multi-dimensional Vandermonde Structure Based DOD-DOA and Doppler Frequency Estimation for Bistatic MIMO Radar

作　　者：程院兵[1] 吴临江 郑昱[1] 顾红[2] CHENG Yuanbing;WU Linjiang;ZHENG Yu;GU Hong(Nanjing Research Institute of Electronics Technology,Nanjing 210039,China;School of Electronic Engineering and Optoelectronic Technology,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京电子技术研究所,南京210039 [2]南京理工大学电子工程与光电技术学院,南京210094

出　　处：《电子与信息学报》2018年第9期2258-2264,共7页Journal of Electronics & Information Technology

摘　　要：针对双基地MIMO雷达收发角及多普勒联合频率估计问题,该文基于参数流型矩阵的多维范德蒙德结构特征,提出一种低运算量的3维参数联合估计算法。首先根据回波模型的多维结构特性构造3阶张量,并对其分别沿发射维、接收维和脉冲维切片得到3个等效矩阵;然后结合多维范德蒙德结构特征和等效矩阵的左奇异矩阵具有Khatri-Rao乘积结构特征,估计收发阵列流型矩阵和多普勒流型矩阵;最后通过Root-MUSIC算法估计收发角和多普勒频率。与现有算法相比,该算法显著改善了参数估计精度,在小脉冲数下,其运算量与旋转不变子空间算法(ESPRIT)相当。仿真实验验证了该算法的有效性。In order to solve the problem of Direction Of Departure （DOD）, Direction Of Arrival （DOA） and Doppler frequency estimation in bistatic MIMO radar, a low complexity method is proposed for joint estimation of the three parameters based on the multi-dimensional Vandermonde structure characteristic of the parameter manifold matrices. First, a third-order tensor is constructed according to the multi- dimensional structure of the echo model. Three equivalent matrices are obtained by cutting the tensor along transmit dimension, receive dimension and pulse dimension respectively. Then, combining the multi-dimensional Vandermonde characteristic with the Khatri-Rao product characteristic of the left-singular matrix of the equivalent matrix, transmit manifold matrix, receive manifold matrix and Doppler manifold matrix are estimated. Finally, the DOD, DOA and Doppler frequency are estimated by Root-MUSIC algorithm. Compared with the existence methods, the proposed algorithm improves obviously the estimation precision, and its computational cost is comparable to that of Estimation of Signal Parameters via Rotation Invariant Techniques （ESPRIT） method in small pulse number. The effectiveness of the proposed method is verified by simulation results.

关 键 词：双基地MIMO雷达 收发角 多普勒频率 3阶张量 范德蒙德结构 

分 类 号：TN958[电子电信—信号与信息处理]