计算机应用研究2017，Vol.34Issue(5)：1459-1462,4.DOI:10.3969/j.issn.1001-3695.2017.05.041
基于双频互质阵列的DOA估计方法
DOA estimation based on dual-frequency co-prime array
摘要
Abstract
Under the condition of single-frequency operation for co-prime array,discarding the non-uniform virtual elements in the difference co-array brings about the number loss of the resolvable sources in DOA estimation.This paper proposed a DOA estimation algorithm to improve the number of the resolvable sources based on the co-prime array with dual-frequency operation.By selecting single proper additional operation frequency,it obtained the additional different positions of virtual elements in the difference co-array to fill two missed virtual elements in the difference co-array of co-prime array with the reference operation frequency.Compared with the single-frequency operation,the proposed dual-frequency operation acquired more uniform virtual elements,improving the degree-of-freedom of DOA estimation which resulted in the DOA estimation for more incoherent sources.More specifically,corresponding to a co-prime array with N + 2M-1 physical elements,the dual-frequency operation improves the degree-of-freedom by M and increases the number of resolvable incoherent sources in DOA estimation by M.关键词
互质阵列/DOA估计/双频工作/差协同阵/自由度Key words
co-prime array/DOA estimation/dual-frequency operation/difference co-array/degree-of-freedom分类
信息技术与安全科学引用本文复制引用
陈川,郭勇,贾勇..基于双频互质阵列的DOA估计方法[J].计算机应用研究,2017,34(5):1459-1462,4.基金项目
国家自然科学基金资助项目(61501062) （61501062）
国家自然科学基金资助项目(41574136) （41574136）
