脉冲噪声下基于中值滤波的DOA估计  

DOA Estimation Based on Median Filtering in Pulse Noise

作　　者：武闯闯 张蛟[1] WU Chuang-chuang;ZHANG Jiao(No.36 Research Institute of CETC,Jiaxing,Zhejiang 314033,China)

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2024年第2期27-30,共4页Communication Countermeasures

摘　　要：波达方向(Direction of Arrival,DOA)估计是无线定位的一项重要手段,广泛应用于雷达、无线电监测、声纳等领域。在脉冲噪声环境下,使用基于高斯模型的传统方法进行DOA估计时,DOA估计性能将显著下降,针对这一问题,提出一种基于中值滤波(Median Filtering,MF)的稳健DOA估计方法。该方法通过中值滤波技术滤除受脉冲噪声影响的样本,进而利用多重信号分类(Multiple Signal Classification,MUSIC)算法实现DOA的高精度稳健估计。理论分析表明,该方法可以较好地抑制脉冲噪声影响,实现DOA的精确估计。仿真结果证明,相比同类算法,该方法具有更高的DOA估计精度。DOA estimation is an important means of wireless positioning,widely used in radar,radio monitor-ing,and sonar fields.In the presence of pulse noise,the performance of traditional methods based on Gaussian models for DOA estimation will significantly decrease.To address this issue,this paper proposes a robust DOA estimation method based on median filtering in pulse noise.This method filters out samples affected by pulse noise through MF technology,and then uses MUSIC algorithms to achieve high-precision and robust estima-tion of DOA.Theoretical analysis shows that the algorithm proposed in this paper can effectively suppress the in-fluence of pulse noise,and achieve accurate estimation of DOA.The simulation results demonstrate that the pro-posed method has higher DOA estimation accuracy compared to similar algorithms.

关 键 词：波达方向 脉冲噪声 中值滤波 多重信号分类 

分 类 号：TN971[电子电信—信号与信息处理]