一种基于循环自适应波束成形的稳健的DOA递推估计算法  

A Robust DOA Recursive Estimation Algorithm Based on Cyclic Adaptive Beamforming

作　　者：赵璧原 戴旭初[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,合肥230027

出　　处：《遥测遥控》2014年第4期39-46,共8页Journal of Telemetry,Tracking and Command

摘　　要：基于循环自适应波束成形算法和循环频率的递推估计算法,提出一种稳健的DOA估计的递推算法。算法的主要特点是在循环频率存在偏差和时变的情况下,能够对静止辐射源或运动辐射源的DOA进行实时的估计和可靠的跟踪。仿真实验表明,所提算法性能稳定,较现有的一些算法(如循环MUSIC算法、平均循环相关矩阵算法等)具有更好的估计和跟踪性能。Based on the cyclic adaptive beamforming algorithm and cycle frequency recursive estimation algorithm,a new robust DOA recursive estimation algorithm is proposed.The main feature of the proposed algorithm is that in the presence of CFE （Cycle Frequency Error） or time-varying cycle frequency,the proposed algorithm can real-timely estimate DOA of stationary radiation source and reliably track DOA of moving radiation source.Simulation results show that compared with some existing algorithms,such as the Cyclic MUSIC and Averaged Cyclic Correlation Matrix methods,the proposed algorithm possesses better robustness and outperformance in DOA estimation and tracking.

关 键 词：DOA估计和跟踪 循环平稳信号 循环频率偏差 运动辐射源 

分 类 号：TN971[电子电信—信号与信息处理]