基于单基地嵌套MIMO雷达的联合角度和多普勒频率参数估计  

Joint Angle and Doppler Frequency Estimation for Monostatic MIMORadar Based on Nested Array

作　　者：黄章斌 郭滨 管留 HUANG Zhang-bin;GUO Bin;GUAN Liu(Unit 75842 of PLA,Guangzhou 510000,China)

机构地区：[1]解放军75842部队,广州510000

出　　处：《火力与指挥控制》2022年第2期98-102,共5页Fire Control & Command Control

摘　　要：为了提升单基地MIMO雷达中角度和多普勒频率的二维参数估计性能,通过在单基地MIMO雷达的接收端和发射端进行嵌套阵列设计来实现阵列自由度的提升。通过利用隐含在目标结构中的时延特性来实现对多普勒频率旋转不变关系的构建。通过构建三阶张量模型来实现对阵列接收数据空时特性的充分利用。最后,通过利用三线性迭代最小二乘平行因子算法来实现角度和多普勒频率的精确参数估计。所提出的算法能够实现角度和多普勒频率的自动参数配对。并且,在信源数大于阵元数的欠定条件下仍然能够实现良好的参数估计性能。仿真实验进一步验证了所提算法的有效性和优越性。This paper addresses the problem of joint angle and Doppler frequency estimation for monostatic multiple input multiple output(MIMO)radar.In order to improve the estimation performance,nested array configuration is adopted both for the transmitter and receiver to obtain more degrees of freedom.And,temporal-spatial characteristic inherent in the target structures is also utilized to provide the rotational invariant factor for Doppler frequency estimation.Further,the receive data can be formulated in a PARAFAC model and the trilinear Alternating Least Squares can be developed to estimate the angle and Doppler frequency.The proposed method can achieve automatic pairing for 2-D parameters estimation and it can still provide better estimation performance even in the underdetermined case.And,additional numerical results are conducted to verify the effectiveness and superiority of the proposed method.

关 键 词：MIMO 雷达 嵌套阵列 空时模型 平行因子算法 角度和多普勒估计 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]