An Indoor Localization and Tracking System Using Successive Weighted RSS Projection

Wen, K. , Seow, C. K. and Tan, S. Y. (2020) An Indoor Localization and Tracking System Using Successive Weighted RSS Projection. IEEE Antennas and Wireless Propagation Letters, 19(9), pp. 1620-1624. (doi: 10.1109/LAWP.2020.3011993)

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Abstract

This letter proposes a novel successive weighted received signal strength (RSS) indoor localization and tracking system that projects previous time instance estimated mobile device (MD) position to provide projected RSS values. Such RSS projection increases the number of available RSS from Nm to Nm + N AP , where N AP is the total number of access points and Nm is the number of RSS values measured by MD, ranging from 0 to N AP . Our proposed system thus resolves the issues associated with insufficient or no RSS values received by MD. Inertial navigation system (INS) is merged with RSS localization system to provide a weighted fusion of projected and measured RSS values. The weighting factors are derived based on the INS and RSS localization accuracy where the former is initially accurate but deteriorates with time and the latter is time-independent but environment-dependent. The proposed system was tested in indoor environments and outperformed other existing localization systems such as RSS and INS fusion using extended Kalman filter and non-line-of-sight (NLOS) selection scheme, especially in heavy multipath environment, by 42% and 75%, respectively.

Item Type:Articles (Letter)
Keywords:Indoor localization and tracking, received signal strength, strapdown inertial navigation system.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Seow, Dr Chee Kiat
Authors: Wen, K., Seow, C. K., and Tan, S. Y.
Subjects:Q Science > Q Science (General)
T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
College/School:College of Science and Engineering > School of Computing Science
Journal Name:IEEE Antennas and Wireless Propagation Letters
Journal Abbr.:IEEE AWPL
Publisher:IEEE
ISSN:1536-1225
ISSN (Online):1548-5757
Copyright Holders:Copyright © 2020 IEEE
First Published:First published in IEEE Antennas and Wireless Propagation Letters 19(9):1620-1624
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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