A novel dynamic localisation system for indoor and outdoor tracking

IF 1.2 Q4 TELECOMMUNICATIONS

Journal of Location Based Services Pub Date : 2019-06-10 DOI:10.1080/17489725.2019.1606459

T. Hooi, H. L. Khoo, R. Komiya

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引用次数: 3

Abstract

ABSTRACT Hybrid indoor and outdoor localisation system has generated substantial interest from researchers due to its potential use in many fields. Many research papers on hybrid localisation were focused on localisation accuracy and computation time instead of the process for seamless switching during the subject’s indoor-outdoor movement. Seamless and stable switching can improve the usability and practicality of a system in an ever-changing scenario. This paper presents a hybrid localisation system that can adapt to the changes in the environment. Two hybrid systems – Enhanced Fusion Hybrid (EFH) and Enhanced Unified Hybrid (EUH), and novel signal selection and switching algorithms suitable for dynamic environment where signal fluctuations and transient condition frequently occur, i.e. the Clean Radio Signal Label (CRSL) classification algorithm and the Adaptive Signal Thresholding (AST) algorithm are proposed. From the experimental results of EFH and EUH methods, the GPS and Wi-Fi combination produces the best results as compared to the combinations of GPS and GSM or GSM and Wi-Fi. The accuracy of estimates was improved to 2.0 m to 5.0 m. Further work shown that an accuracy of 2.0 m or less could be achieved with an increase in Wi-Fi nodes from three to four for the system.

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一种用于室内和室外跟踪的动态定位系统

摘要室内外混合定位系统由于其在许多领域的潜在应用，引起了研究人员的极大兴趣。许多关于混合定位的研究论文都集中在定位精度和计算时间上，而不是研究对象室内外运动过程中的无缝切换过程。无缝稳定的切换可以在不断变化的场景中提高系统的可用性和实用性。本文提出了一种能够适应环境变化的混合本地化系统。提出了两种混合系统——增强融合混合（EFH）和增强统一混合（EUH），以及适用于信号波动和瞬态条件频繁发生的动态环境的新型信号选择和切换算法，即清洁无线电信号标签（CRSL）分类算法和自适应信号阈值（AST）算法。根据EFH和EUH方法的实验结果，与GPS和GSM或GSM和Wi-Fi的组合相比，GPS和Wi-Fi组合产生最佳结果。估计的准确性提高到2.0米到5.0米。进一步的工作表明，随着系统的Wi-Fi节点从三个增加到四个，可以实现2.0米或更低的准确性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Location Based Services TELECOMMUNICATIONS-

CiteScore

3.70

自引率

8.70%

发文量

期刊介绍： The aim of this interdisciplinary and international journal is to provide a forum for the exchange of original ideas, techniques, designs and experiences in the rapidly growing field of location based services on networked mobile devices. It is intended to interest those who design, implement and deliver location based services in a wide range of contexts. Published research will span the field from location based computing and next-generation interfaces through telecom location architectures to business models and the social implications of this technology. The diversity of content echoes the extended nature of the chain of players required to make location based services a reality.