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TDOA estimation using a pair of synchronized anchor nodes

Published online by Cambridge University Press:  08 April 2019

Vitomir Djaja-Josko Open the ORCID record for Vitomir Djaja-Josko [Opens in a new window] ,
Jerzy Kolakowski  and
Jozef Modelski
Vitomir Djaja-Josko*
Affiliation:
Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, Nowowiejska 15/19, 00-665 Warsaw, Poland
Jerzy Kolakowski
Affiliation:
Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, Nowowiejska 15/19, 00-665 Warsaw, Poland
Jozef Modelski
Affiliation:
Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, Nowowiejska 15/19, 00-665 Warsaw, Poland
*
Author for correspondence: V. Djaja-Josko, E-mail: v.djaja-josko@ire.pw.edu.pl
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Abstract

Nowadays, as indoor localization is getting more popular, there is a growing need for reliable and accurate techniques of position determination. Recently, ultrawideband (UWB)-based systems are gaining popularity, since they make achieving positioning errors in the range of dozens of centimeters or even single centimeters, possible. The Time Difference of Arrival (TDOA)-based systems are especially attractive because they allow to simplify tags, in which functionality can be limited to transmission of packets. However, one of TDOA-based solution drawbacks is a need for strict synchronization between anchor nodes, which may be hard to provide in indoor environment. In the paper, a novel method for simplifying synchronization in TDOA-based UWB localization system is described. The paper presents two system architectures based on pairs of synchronized nodes. Results of simulations and experiments included in the article allow for evaluation of both solutions.

Keywords

RFID and sensorssystem applications and standardsultrawideband
Type
MIKON 2018
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Special Issue 7: MIKON 2018 / EuMW 2018 (Part II) , September 2019 , pp. 593 - 601
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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