| 基于均匀圆阵的改进UCA-ESPRIT算法 |
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| 引用本文： | 刘艳,廖勇. 基于均匀圆阵的改进UCA-ESPRIT算法[J]. 计算机科学, 2017, 44(12): 72-74 |
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| 作者姓名： | 刘艳 廖勇 |
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| 作者单位： | 长江师范学院电子信息工程学院 重庆408000,重庆大学通信与测控中心 重庆400044 |
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| 基金项目： | 本文受国家自然科学基金(61501066),重庆市基础与前沿研究计划项目(cstc2015jcyjA40003)资助 |
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| 摘 要： | 波达方向(DOA)估计是阵列信号处理的研究热点和难点之一。基于阵列天线, 利用空间谱估计理论进行DOA估计,提出一种改进算法——I-UCA-ESPRIT。首先根据均匀圆阵(UCA)的中心对称性,将输入信号进行重新排列；然后将重新排列的信号进行实值转换,并对相关矩阵进行特征值分解；最后引入SVD算法,以求解来波信号的方位角和俯仰角。仿真结果表明,该算法不仅适用于DOA估计的非相干信号和相干信号,且优于UCA-RB-MUSIC算法和UCA-ESPRIT算法。
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| 关 键 词： | 智能天线 DOA 均匀圆阵 UCA-ESPRIT |
| 收稿时间： | 2016-10-17 |
| 修稿时间： | 2017-02-05 |
Imporved UCA-ESPRIT Algorithm Based on Uniform Circular Array |
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| LIU Yan and LIAO Yong. Imporved UCA-ESPRIT Algorithm Based on Uniform Circular Array[J]. Computer Science, 2017, 44(12): 72-74 |
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| Authors: | LIU Yan and LIAO Yong |
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| Affiliation: | Department of Electronic Information Engineering,Yangtze Normal University,Chongqing 408000,China and Center of Communication and TT&C,Chongqing University,Chongqing 400044,China |
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| Abstract: | DOA (Direction of Arrival) estimation has become one of research hotspots and difficulties in array signal processing.This paper discussed an improved algorithm by using theory of special spectrum estimation based on smart antenna.An imporved UCA-ESPRIT algorithm was discussed.Firstly,the array of the input signal can be reordered according to the central symmetry of uniform circular array (UCA).Then the data array is real-value transformed,and the covariance matrix of the transformed array is carried out by eigenvalue decomposition.Finally,to solve the azimuth angle and elevation angle,SVD is carried out.Simulation results show that the proposed algorithm is not only suitable for the DOA estimation of incoherent signals and coherent signals,but also superior to UCA-RB-MUSIC algorithm and UCA-ESPRIT algorithm. |
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| Keywords: | Smart antenna DOA Uniform circular array UCA-ESPRIT |
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