基于联合稀疏重构模型的双基MIMO雷达off-grid目标参数快速估计  

Fast Estimation of off-grid Target Parameters for Bistatic MIMO Radar Based on Joint Sparse Reconstruction Model

作　　者：张栋 白新有 邱彦文 郑桂妹[2] ZHANG Dong;BAI Xinyou;QIU Yanwen;ZHENG Guimei(The Unit 66135 of PLA,Beijing 100144,China;Air and Missile Defense College,Aire Force Engineering University,Xi'an 710051,China)

机构地区：[1]解放军66135部队,北京100144 [2]空军工程大学防空反导学院,西安710051

出　　处：《现代雷达》2019年第11期30-34,共5页Modern Radar

摘　　要：针对多输入多输出(MIMO)雷达二维参数稀疏估计中的不在格点上(off-grid)目标问题,利用两次泰勒展开对信号模型进行修正,构建联合稀疏重构模型,将off-grid问题转化为联合稀疏重构问题;为降低计算复杂度,针对该联合稀疏重构模型提出Joint-2D-OMP算法。仿真结果表明:所提模型和算法在解决off-grid问题的同时,可有效提高参数估计的速度。Aiming at the problem of non-lattice targets in two-dimendional parameters sparse estimation of MIMO radar,the signal model is modified by two Taylor expansion,and the joint sparse reconstruction model is obtained. The off-grid problem is transformed into the joint sparse reconstruction problem. Then,in order to reduce the computational complexity,a Joint-2 D-OMP algorithm is proposed for the joint sparse reconstruction model. The simulation results show that the proposed model and algorithm can effectively reduce the computational complexity of parameter estimation while solving off-grid problem.

关 键 词：多输入多输出雷达 到达角 联合稀疏重构模型 不在格点上(off-grid)目标 

分 类 号：TN957[电子电信—信号与信息处理]