A self-learning mean optimization filter to improve bluetooth 5.1 AoA indoor positioning accuracy for ship environments

被引：8

作者：

Lin, Qianfeng ^{[1
]}

Son, Jooyoung ^{[2
]}

Shin, Hyeongseol ^{[3
]}

机构：

[1] Korea Maritime & Ocean Univ, Dept Comp Engn, 727 Taejong Ro, Busan 49112, South Korea

[2] Korea Maritime & Ocean Univ, Div Marine IT Engn, 727 Taejong Ro, Busan 49112, South Korea

[3] Korea Maritime & Ocean Univ, Div Marine Syst Engn, 727 Taejong Ro, Busan 49112, South Korea

来源：

JOURNAL OF KING SAUD UNIVERSITY-COMPUTER AND INFORMATION SCIENCES | 2023年 / 35卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

Angle of arrival; Bluetooth; Indoor positioning; Ship environments;

D O I：

10.1016/j.jksuci.2023.01.019

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

As COVID-19 is still spreading globally, the narrow ship space makes COVID-19 easier for the virus to infect ship passengers. Tracking close contacts remains an effective way to reduce the risk of virus trans-mission. Therefore, indoor positioning technology should be developed for ship environments. Today, almost all smart devices are equipped with Bluetooth. The Angle of Arrival (AoA) using Bluetooth 5.1 indoor positioning technology is well suited for ship environments. But the narrow ship space and steel walls make the multipath effect more pronounced in ship environments. This also means that more noises are included in the signal. In the Uniform Rectangular Array (URA) type receiving antenna array, elevation and azimuth angles are two important parameters for the AoA indoor positioning technology. Elevation and azimuth angles are unstable because of the influence of noise. In this paper, a Self-Learning Mean Optimization Filter (SLMOF) is proposed. The goal of SLMOF is to find the optimal elevation and azimuth angles as a way to improve the Bluetooth 5.1 AoA indoor positioning accuracy. The experimental results show that the Root Mean Square Error (RMSE) of SLMOF is 0.44 m, which improves the accuracy by 72% compared to Kalman Filter (KF). This method can be applied to find the optimal average in every dataset.(c) 2023 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

引用

页码：59 / 73

页数：15