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A low-cost centimeter-level acoustic localization system without time synchronization

Tan, C and Zhu, X and Su, Y and Wang, Y and Wu, Z and Gu, D (2016) 'A low-cost centimeter-level acoustic localization system without time synchronization.' Measurement: Journal of the International Measurement Confederation, 78. 73 - 82. ISSN 0263-2241

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Abstract

© 2015 Published by Elsevier Ltd. In this paper, we present a range-based localization method without time synchronization. It uses only a speaker, a microphone, and some forms of device-to-device communication such as WIFI radio; thus, it is easily applied in most commercial off-the-shelf mobile devices such as cell phones. The localization scheme is composed of two stages. We obtain the initial distances between the moving object and the anchors in the first stage using a BeepBeep ranging system, in which they both send and receive sound signals. In the second stage, which is the main localization stage, the difference distances between the moving object and the anchors can be obtained using a OneBeep ranging system. Only the located object must emit sound signals periodically, and all of the anchors including the located object should receive the sound signals in the OneBeep system. The distances between the moving object and all the anchors can be obtained by adding the difference distances to the initial distances, and then, the moving object can be located. A localization experiment was conducted in a 6 × 9 m room with weak reflection, and the localization can reach centimeter-level accuracy in 5 min.

Item Type: Article
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Jim Jamieson
Date Deposited: 16 Oct 2015 14:14
Last Modified: 23 Jan 2019 00:16
URI: http://repository.essex.ac.uk/id/eprint/15296

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