双基地MIMO雷达四维角度和多普勒频率联合估计  

Joint 4-D Angle and Doppler Frequency Estimation for Bistatic MIMO Radar

作　　者：许凌云[1,2] 张小飞[1] 许宗泽[1] 于淼[2] 

机构地区：[1]南京航空航天大学电子信息工程学院,南京210016 [2]总参第63研究所,南京210007

出　　处：《电子与信息学报》2012年第12期2942-2947,共6页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61179006);南京航空航天大学理工科融合专项基金(NP2011036);厦门大学水声通信与海洋信息技术教育部重点实验室开放课题;中央高校基本科研业务费专项资金(NZ2012010;kfjj120115;kfjj20110215)资助课题

摘　　要：该文提出了一种新的基于L型阵列双基地MIMO雷达多目标的4维角度和多普勒频率联合估计的算法,该算法根据DOA矩阵法的思想构造矩阵,通过特征参数与待估参数之间的特定关系,推导出了目标2维DOA,2维DOD及多普勒频率联合估计式,并得到闭式解。该算法无需谱峰搜索,只需一次特征值分解,且估计出的5维参数自动配对,与ESPRIT算法相比,计算复杂度降低,且性能非常接近,并能克服空间色噪声的影响,在发射信号非完全正交时仍旧适用。仿真结果验证了该算法的有效性。A novel joint 4-Dimensional （4-D） angle and Doppler frequency estimation algorithm is proposed for bistatic MIMO radar with L-shaped arrays. The DOA matrix method is used to construct the date model and then the close-form solution of the two dimensional DOA, the two dimensional DOD and Doppler frequency can be obtained. The proposed algorithm requires no searching spectral peak, and the estimated five dimensional parameters of the targets can be paired automatically. The proposed algorithm has very close parameters estimation to ESPRIT algorithm which has a much higher complexity than the algorithm. The method can eliminate the effect of the spatial colored noise and it is applicable even if the transmitted waveforms are not entirely orthogonal. The simulation results verify its effectiveness.

关 键 词：双基地MIMO雷达 4维角度估计 多普勒频率估计 L型阵列 

分 类 号：TN958[电子电信—信号与信息处理]