未知互耦下双基地MIMO雷达阵列DOD和DOA估计算法  

DOA and DOD Estimation for Bistatic MIMO Radar with Unknown Mutual Coupling

作　　者：戴继生[1] 汪洋[1] 叶中付[2] 

机构地区：[1]江苏大学电气信息工程学院,镇江212013 [2]中国科学技术大学电子工程与信息科学系,合肥230027

出　　处：《数据采集与处理》2016年第4期713-718,共6页Journal of Data Acquisition and Processing

基　　金：国家自然科学基金(61102054)资助项目;中国博士后科学基金(2014M560403;2015T80509)资助项目

摘　　要：针对MIMO雷达阵列中存在的互耦效应会严重影响发射角(DOD)和接收角(DOA)估计性能的问题,提出了一种基于ESPRIT算法的双基地MIMO雷达阵列DOA和DOD估计方法。该方法利用阵列流型矩阵的结构特点和均匀线阵互耦矩阵的带状Toeplitz特性,能实现互耦效应未知情况下DOA和DOD的精确估计。本文方法无需对角度进行搜索,计算量小,对角度的估计精度高,特别是在低信噪比环境下依然能取得较好的估计性能。仿真结果验证了本算法的可行性和正确性。A new ESPRIT based direction of departure （DOD） and direction of arrival （DOA） estimation method for bistatic multi-input multi-output （MIMO） radar with unknown mutual coupling is proposed, in connection with the presence of unknown mutual coupling which severely affects the performance of DOA and DOD estimation. The proposed method can estimate the DOA and DOD accurately by utilizing the structural properties of antenna array matrix and the strip feature of mutual coupling matrix of uniform linear array （ULA）. Moreover, the new method is free of search with a small amount of calcula- tion. Even in low SNR environment or mutual coupling effect is significant, the performance of the proposed method is also stable. Simulation results illustrate the feasibility and correctness of the proposed method.

关 键 词：阵列信号处理 MIMO雷达 互耦 接收角估计 发射角估计 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]