Concurrent Bi-directional TDoA Positioning in UWB Network with Free-running Clocks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F22%3A00356994" target="_blank" >RIV/68407700:21230/22:00356994 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/TAES.2022.3161895" target="_blank" >https://doi.org/10.1109/TAES.2022.3161895</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TAES.2022.3161895" target="_blank" >10.1109/TAES.2022.3161895</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Concurrent Bi-directional TDoA Positioning in UWB Network with Free-running Clocks

Popis výsledku v původním jazyce

This paper proposes an approach of TDoA positioning in UWB networks, where user tags localize themselves by means of exploitation of the broadcasted synchronization messages of the anchor network. Such approach promises unlimited number of localized devices, moreover, the position is available directly at the user terminal. The key challenge of this method is to eliminate errors caused by tag clock drifts, which render the TDoA measurements useless when left uncorrected. Our method employs extended Kalman filtering (EKF) for the estimation of position and elimination of the drift-induced errors. It is shown that the system performance is similar to the more common TDoA method, where the tags transmit blinks received by the anchors. However, the anchors are still able to receive the blink messages and estimate position of those tags, since the synchronization messages are exploited. Therefore, it is possible to use both directions of the TDoA positioning concurrently; a limited number of tags is tracked by the infrastructure and all tags may compute their positions. The TDoA solutions have achieved RMS horizontal accuracy of 25.9 cm and 33.6 cm, respectively.

Název v anglickém jazyce

Concurrent Bi-directional TDoA Positioning in UWB Network with Free-running Clocks

Popis výsledku anglicky

This paper proposes an approach of TDoA positioning in UWB networks, where user tags localize themselves by means of exploitation of the broadcasted synchronization messages of the anchor network. Such approach promises unlimited number of localized devices, moreover, the position is available directly at the user terminal. The key challenge of this method is to eliminate errors caused by tag clock drifts, which render the TDoA measurements useless when left uncorrected. Our method employs extended Kalman filtering (EKF) for the estimation of position and elimination of the drift-induced errors. It is shown that the system performance is similar to the more common TDoA method, where the tags transmit blinks received by the anchors. However, the anchors are still able to receive the blink messages and estimate position of those tags, since the synchronization messages are exploited. Therefore, it is possible to use both directions of the TDoA positioning concurrently; a limited number of tags is tracked by the infrastructure and all tags may compute their positions. The TDoA solutions have achieved RMS horizontal accuracy of 25.9 cm and 33.6 cm, respectively.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/TH03010261" target="_blank" >TH03010261: URP4 - Určování absolutní a relativní polohy v prostředí 4. průmyslové revoluce</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Transactions on Aerospace and Electronic Systems

ISSN

0018-9251

e-ISSN

1557-9603

Svazek periodika

58

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

4434-4450

Kód UT WoS článku

000866503000053

EID výsledku v databázi Scopus

2-s2.0-85127032354