计算机工程与应用2012，Vol.48Issue(10)：102-105,4.DOI:10.3778/j.issn.1002-8331.2012.10.022
DOA估计算法的一种修正MUSIC算法的研究
Research on modified MUSIC algorithm of DOA estimation
摘要
Abstract
Traditional improved MUSIC algorithm decomposes the signal covariance matrix to make the signals subspace be orthogonal to the noise subspace, so decreases the effect of the noise. But when the signals interval are very small, traditional improved "MUSIC algorithm has been unable to distinguish the signals as the SNR decreases. To this problem, a modified MUSIC is proposed which makes full use of signals subspace and its eigenvalue, on basis of the signals subspace obtained be orthogonal to the noise subspace, construct spectrum search function and then estimate the signals. Through computer simulation, it has been approved that when the signals interval are very small under the condition of the lower SNR and exist the correlated signals, modified MUSIC can estimate the signals accurately that traditional improved MUSIC algorithm can't estimate.关键词
波达方向估计/MUSIC算法/改进MUSIC算法/修正MUSIC算法Key words
Direction of Arrival (DOA) estimation/ Multiple Signal Classification (MUSIC) algorithm/ improved MUSIC algorithm/ modified MUSIC algorithm分类
信息技术与安全科学引用本文复制引用
赵谦,董民,梁文娟..DOA估计算法的一种修正MUSIC算法的研究[J].计算机工程与应用,2012,48(10):102-105,4.基金项目
陕西省科技厅工业攻关项目(No.2010K06-03,No.2010K01-074). （No.2010K06-03,No.2010K01-074）
