[1]刁弘扬,胡洲勇,禹永植.一种改进广义正交匹配追踪的DOA估计方法[J].应用科技,2020,47(4):54-58.[doi:10.11991/yykj.201910006]
 DIAO Hongyang,HU Zhouyong,YU Yongzhi.An improved generalized orthogonal matching pursuit method used in the direction of arrival estimation[J].Applied science and technology,2020,47(4):54-58.[doi:10.11991/yykj.201910006]
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一种改进广义正交匹配追踪的DOA估计方法(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第47卷
期数:
2020年4期
页码:
54-58
栏目:
现代电子技术
出版日期:
2020-07-05

文章信息/Info

Title:
An improved generalized orthogonal matching pursuit method used in the direction of arrival estimation
作者:
刁弘扬1 胡洲勇2 禹永植1
1. 哈尔滨工程大学 信息与通信工程学院,黑龙江 哈尔滨 150001;
2. 北京遥感设备研究所,北京 100854
Author(s):
DIAO Hongyang1 HU Zhouyong2 YU Yongzhi1
1. College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China;
2. Beijing Institute of Remote Sensing Equipment, Beijing 100854, China
关键词:
DOA估计阵列信号处理压缩感知贪婪算法稀疏表示广义正交匹配追踪最速下降法最小二乘法
Keywords:
DOA estimationarray signal processingcompressed sensinggreedy algorithmsparse representationgeneralized orthogonal matching pursuitsteepest descent methodleast square method
分类号:
TN911.7
DOI:
10.11991/yykj.201910006
文献标志码:
A
摘要:
针对传统匹配追踪算法的波达方向(direction of arrival, DOA) 估计方法精度不高、收敛速度较慢等问题,提出一种改进广义正交匹配追踪(generalized orthogonal matching pursuit, GOMP)算法的DOA估计方法。通过空间网格划分建立DOA估计模型,在此模型基础上引入GOMP算法对接收到的信号进行重构,然后在原有GOMP算法基础上引入最速下降法,提出一种改进GOMP算法用于DOA估计中。与GOMP算法相比,改进算法使用运算简单的最速下降法进行信号重构,降低了重构算法的复杂度。仿真结果表明:改进算法成功地得到了DOA估计值,相对于传统OMP算法,改进算法具有更高的DOA估计精度,有效地减少了重构耗时,具有更高的估计性能。
Abstract:
To solve the problems of low accuracy and slow convergence rate of the DOA (direction of arrival) estimation based on traditional matching pursuit method, we propose a DOA estimation method based on improved generalized orthogonal matching pursuit (GOMP) algorithm. Firstly, a DOA estimation model is established by spatial gridding. Secondly, the GOMP algorithm is introduced to reconstruct the received signal based on this model. Specifically, the steepest descent method based on the original GOMP algorithm is introduced, and the improved GOMP algorithm is used in the DOA estimation method. Compared with the GOMP algorithm, the improved algorithm employs the steepest descent method with simple operation to perform signal reconstruction, reduces complexity of the reconstruction algorithm. The simulation results demonstrate that the improved algorithm has successfully obtained the DOA estimation value. Compared with the traditional OMP algorithm, the improved algorithm can obtain higher DOA estimation accuracy, which effectively reduces the reconstruction time and has higher estimation performance.

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备注/Memo

备注/Memo:
收稿日期:2019-10-21。
基金项目:国家自然科学基金项目(61571146)
作者简介:刁弘扬,男,硕士研究生;禹永植,男,讲师,博士
通讯作者:刁弘扬,E-mail:1528969010@qq.com
更新日期/Last Update: 2020-11-27