一种均匀阵列下的ESPRIT改进算法研究  

A refined ESPRIT algorithm for uniform line arrays

作　　者：司元雷[1] 杨明华[1] 霍宏宇[1] 白杨 

机构地区：[1]云南大学信息学院 [2]云南省电信有限公司,云南昆明650011

出　　处：《云南大学学报（自然科学版）》2006年第4期312-315,共4页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目(60172006)

摘　　要：通过对均匀阵列下ESPRIT算法的研究,提出了1种基于ESPRIT的新算法,该算法采用后向平移技术,通过对旋转矩阵的改进,使用同一几何阵列构造2个子阵列,而不需再将其拆分为2个子阵列,从而能够增加阵列的有效孔径,进而有效地估计出信号的波达方向,并给出了计算机仿真结果.A new algorithm based on ESPRIT is proposed by studying the ESPRIT algorithm in uniform line arrays. This algoriethm adopts the back-shifting technique and use＇s the same array geometry to construct 2 subarrays, while avoiding detaching the array into 2 subarrays. Therefore, the proposed mathod can extend the avaiable rotation matrix aperture of the array. Consequently, the directoon of signal arrival can be estimated effectively. The simulation results are given to show the performance of our proposed method.

关 键 词：ESPRIT算法 后向平移技术 旋转矩阵 波达方向 

分 类 号：TN911.7[电子电信—通信与信息系统]