四元数数据投影DOA跟踪算法  

DOA Tracking Algorithm Based on Quaternion Data Projection Method

作　　者：陶军[1] 虞飞[1] 林智勇[1] 

机构地区：[1]空军航空大学航空控制工程系,长春130022

出　　处：《数据采集与处理》2013年第2期244-249,共6页Journal of Data Acquisition and Processing

摘　　要：研究了基于两分量简化电磁矢量传感器阵列的多个信号波达方向(Direction of arrival,DOA)跟踪问题,提出了一种基于四元数模型的数据投影(Quaternion data projection method,QDPM)跟踪算法。此算法对初始化条件引起的波动具有很强的鲁棒性,并且具有比常规DPM(Data projection method)算法更快的收敛速度,尤其在信号角度变化较剧烈时体现得更明显。此外,在低信噪比的情况下,QDPM算法比DPM算法具有更高的DOA跟踪精度。最后通过仿真实验验证了算法的有效性。The problem of direction-of-arrival （DOA） tracking for multi-signals is researched based on simplified polarization vector-sensor array, and a novel quaternion data projection method （QDPM） is proposed. The proposed algorithm has high robustness to the undulate phenomenon arisen from the initialization, and converges faster than the conventional data pro-jection method （DPM）, especially when the DOA changs drastically. Moreover, the QDPM al-gorithm shows a higher tracking precision than DPM algorithm at low signal-to-noise ratio （SNR）. Finally, simulation results verify the effectiveness of the proposed algorithm.

关 键 词：电磁矢量传感器阵列 四元数 波达方向 子空间跟踪 信号处理 

分 类 号：TP391.1[自动化与计算机技术—计算机应用技术]