现代雷达2018，Vol.40Issue(4)：27-30,4.DOI:10.16592/j.cnki.1004-7859.2018.04.006
基于双频虚拟互质阵列的均匀稀疏阵列DOA估计算法
DOA Estimation Based on Virtual Co-prime Array from Dual-frequency Sparse Uniform Array
张伟 1刘畅 1贾勇 1石荣1
作者信息
- 1. 电子信息控制重点实验室, 成都610036
- 折叠
摘要
Abstract
A DOA estimation algorithm of dual-frequency operation based on the sparse and uniform array (SUA) is proposed in this paper.By properly selecting an additional frequency,the number and the inter-element spacing of virtual elements,an additional virtual SUA is generated whose inter-element spacing is co-prime with that of the physical SUA.The physical and virtual SUAs are combined into a virtual co-prime array which provides more degrees-of-free than the number of the physical elements from the contiguous elements of the corresponding difference co-array.Based on the one-to-one relationship between the correlation units and the difference co-array elements,the correlation matrix augmentation is performed to implement DOA estimation of more uncorrelated sources than the number of physical elements.The validation simulation is provided based on the MUSIC algorithm.关键词
波达方向角估计/稀疏均匀阵列/虚拟互质阵列/双频Key words
DOA estimation/sparse uniform array/virtual co-prime array/dual-frequency分类
信息技术与安全科学引用本文复制引用
张伟,刘畅,贾勇,石荣..基于双频虚拟互质阵列的均匀稀疏阵列DOA估计算法[J].现代雷达,2018,40(4):27-30,4.
