基于复数域ICA的DOA估计方法
DOA Estimation Based on Complex-valued ICA
杨建 1赵飞 1尚子翔1
作者信息
- 1. 电磁空间安全全国重点实验室 成都 610036
- 折叠
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.
Abstract
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Key words
antenna array/blind signal separation/DOA/ICA/projection引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据