摘要
针对复杂环境下的无线位置定位精度和DOA(Direct of Arrival)算法性能的问题,提出了一种基于多节点融合的半分布DOA定位算法,以多节点融合模型和半分布结构为基础实现多节点融合的半分布无线网络.该算法利用多天线基站方式,采用全方向天线和基础节点通信以及天线阵列技术,估计DOA的平均距离.其主要用于无线信号特征提取,通过改进的DOA定位算法建立混合天线阵列模型,提高目标节点的位置精度并且使HPBW(Antenna Half-power Beam Width)波速宽度得到改善.实验结果表明,该算法在复杂环境下与Chan、Taylor、Fang算法等经典定位算法相比,提高了位置定位精度且角度距离误差和DOA距离误差更小,同时也改善了DOA算法性能.
Aiming at the problems of wireless location positioning accuracy and performance of Direct of Arrival(DOA)algorithm in complex environments,a semi-distributed DOA location algorithm based on multi-node fusion was proposed.Based on the multi-node fusion model,a semi-distributed structure was added to realize a multi-node fusion semi-distributed wireless network.The algorithm used the multi-antenna base station method,adopted omnidirectional antennas to communicate with basic nodes and antenna array technology to estimate the average distance of DOA.It was mainly used for feature extraction of wireless signals,and established a positioning hybrid antenna array model through an improving DOA positioning algorithm,improved the position accuracy of the target node and the HPBW(antenna half-power beamwidth)wave speed width.The experimental results show that the algorithm can improve the positioning accuracy compared with the classical positioning algorithms in complex environments,and the angular distance error and DOA distance error are smaller.And at the same time,it has improved the performance of DOA algorithm.
作者
李晓飞
陈广福
蓝天明
LI Xiao-fei;CHEN Guang-fu;LAN Tian-ming(Fujian Key Laboratory of Big Data Application and Intellectualization for Tea Industry,Wuyishan 354300,China;College of Mathematics and Computer,Wuyi University,Wuyishan 354300,China)
出处
《吉林师范大学学报（自然科学版）》
2023年第2期85-95,共11页
Journal of Jilin Normal University:Natural Science Edition
基金
福建省自然科学基金项目(2021J011142,2021J011146,2021J011147)
南平市科技计划项目(N2021J007)。
关键词
多节点融合
DOA定位
半分布
定位精度
波束宽度
multi-node fusion
DOA positioning
semi-distribution
positioning accuracy
beamwidth
作者简介
第一作者:李晓飞(1973-),男,江西省南昌市人,博士,副教授.研究方向:信号处理、机器学习.
