基于复数域ICA的DOA估计方法  

DOA Estimation Based on Complex-valued ICA

作　　者：杨建 赵飞 尚子翔 YANG Jian;ZHAO Fei;SHANG Zixiang(National Key Laboratory of Electromagnetic Space Security,Chengdu 610036)

机构地区：[1]电磁空间安全全国重点实验室,成都610036

出　　处：《舰船电子工程》2024年第3期197-201,共5页Ship Electronic Engineering

摘　　要：文中基于复数域的盲源分离方法和子空间的特性,提出了一种DOA估计方法。首先对阵列的模型与盲源分离的模型进行适配,阐明了盲源分离可以用于对信号来向进行估计,接着在分析有噪条件下盲源分离的缺点后,采用子空间投影的方式将信号投影到子空间中运算,以获取运算后的方向矢量的估计值。最后通过仿真结果验证了该方法的有效性与可行性。An efficient method of complex-valued ICA is presented here for DOA estimation,which bases on the orthogonal characteristic of signal-subspace and noise-subspace.Firstly,the models with an antenna array and blind source separation are ana-lyzed to prove that the technology of blind source separation can be used to DOA estimation.Then the shortcomings of blind source separation under noisy conditions are analyzed,and the signal-subspace projection is used to obtain the estimated value of the direc-tion vector.Finally,the simulation results prove that the proposed method is good and feasible.

关 键 词：天线阵列 盲源分离 信号来向 独立分量分析 投影 

分 类 号：TN911.7[电子电信—通信与信息系统]