南京航空航天大学学报（英文版）2021，Vol.38Issue(4)：685-694,10.
均匀面阵中高效率的二维波达方向估计方法:降维求根MUSIC算法
Computationally Efficient 2D-DOA Estimation for Uniform Planar Arrays:RD-ROOT-MUSIC Algorithm
摘要
Abstract
The problem of two-dimensional direction of arrival (2D-DOA) estimation for uniform planar arrays (UPAs) is investigated by employing the reduced-dimensional (RD) polynomial root finding technique and 2D multiple signal classification (2D-MUSIC) algorithm. Specifically,based on the relationship between the noise subspace and steering vectors,we first construct 2D root polynomial for 2D-DOA estimates and then prove that the 2D polynomial function has infinitely many solutions. In particular,we propose a computationally efficient algorithm, termed RD-ROOT-MUSIC algorithm,to obtain the true solutions corresponding to targets by RD technique,where the 2D root-finding problem is substituted by two one-dimensional(1D)root-finding operations. Finally,accurate 2D-DOA estimates can be obtained by a sample pairing approach. In addition,numerical simulation results are given to corroborate the advantages of the proposed algorithm.关键词
均匀面阵/波达方向估计/降维求根MUSIC算法Key words
uniform planar array(UPA)/direction of arrival(DOA)estimation/RD-ROOT-MUSIC algorithm分类
信息技术与安全科学引用本文复制引用
叶长波,朱倍佐,李宝宝,张小飞..均匀面阵中高效率的二维波达方向估计方法:降维求根MUSIC算法[J].南京航空航天大学学报（英文版）,2021,38(4):685-694,10.基金项目
This work was supported by the Nation-al Natural Science Foundation of China(Nos.61631020,61971218,61601167,61371169). （Nos.61631020,61971218,61601167,61371169）
