均匀线阵配合辅助阵元的二维DOA估计方法  

An Algorithm with ULA Assisted by Antenna Elements for Estimating 2 - D DOA

作　　者：刘宪军[1,2] 安红 张扬[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054 [2]电子信息控制重点实验室,成都610036

出　　处：《电子对抗》2012年第2期26-30,共5页Electronic Warfare

摘　　要：提出了一种新的基于信号空时特征结构的二维DOA估计方法。该方法在原有的DOA矩阵方法基础上，利用阵元数据间的互相关关系，将空域观测数据扩展到空时域，从而大大削弱了传统方法中对阵列结构，阵元一致性的约束，无冗余阵元及孔径损失。无需谱峰搜索，因而提高了运算速度。仿真结果证明了该方法的有效性。A modified algorithm is presented in this paper, which is based on traditional DOA ma- trix algorithm. The correlation of antenna element is used to expand the observed date from space domain to space-time domain. Therefore the constraint of array configuration and the identity of the elements can be weakened significantly. The extra antenna elements are no longer needed. The speed of computation is increased without searching spectrum peaks. The simulation results show the validity of the algorithm.

关 键 词：阵列天线 DOA 空时二维处理 

分 类 号：TN957.51[电子电信—信号与信息处理]