文章基本信息

标题：A Novel DOA Estimation Algorithm Using Array Rotation Technique
本地全文：下载
作者：Xiaoyu Lan ; Liangtian Wan ; Guangjie Han 等
期刊名称：Future Internet
电子版ISSN：1999-5903
出版年度：2014
卷号：6
期号：1
页码：155-170
DOI：10.3390/fi6010155
语种：English
出版社：MDPI Publishing
摘要：The performance of traditional direction of arrival (DOA) estimation algorithm based on uniform circular array (UCA) is constrained by the array aperture. Furthermore, the array requires more antenna elements than targets, which will increase the size and weight of the device and cause higher energy loss. In order to solve these issues, a novel low energy algorithm utilizing array base-line rotation for multiple targets estimation is proposed. By rotating two elements and setting a fixed time delay, even the number of elements is selected to form a virtual UCA. Then, the received data of signals will be sampled at multiple positions, which improves the array elements utilization greatly. 2D-DOA estimation of the rotation array is accomplished via multiple signal classification (MUSIC) algorithms. Finally, the Cramer-Rao bound (CRB) is derived and simulation results verified the effectiveness of the proposed algorithm with high resolution and estimation accuracy performance. Besides, because of the significant reduction of array elements number, the array antennas system is much simpler and less complex than traditional array.
关键词：irection of arrival (DOA) estimation; spatial spectrum estimation; multiple signal classification (MUSIC); array rotation