Phase Difference of Arrival aided Downlink Time Difference of Arrival Ultra-Wide Band Positioning System
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00383408" target="_blank" >RIV/68407700:21230/25:00383408 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1109/ACCESS.2025.3567821" target="_blank" >https://doi.org/10.1109/ACCESS.2025.3567821</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/ACCESS.2025.3567821" target="_blank" >10.1109/ACCESS.2025.3567821</a>
Alternative languages
Result language
angličtina
Original language name
Phase Difference of Arrival aided Downlink Time Difference of Arrival Ultra-Wide Band Positioning System
Original language description
Currently there is a growing demand for accurate and reliable positioning indoors or in other environments, where Global Navigation Satellite Systems (GNSS) are unavailable. The precise positioning is required for example by autonomous vehicles used in the industry, safety anti-collision systems or for tracking of goods. Ultra-Wide Band (UWB) positioning systems provide precise location information and are therefore often utilized in such scenarios. The GNSS-like Downlink Time Difference of Arrival (TDoA) method is well suited for these problems, enabling unlimited number of simultaneous users. The addition of independent measurements is often sought for improved precision and robustness of the position estimates. So far, only time-based measurements were available, however, UWB boards capable of Phase Difference of Arrival (PDoA) and thus Angle of Arrival measurements have been introduced recently. In this article we leverage UWB-PDoA board with two Qorvo DW1000 transceivers that share a common clock. Its position is estimated by fusing the TDoA and PDoA by Extended Kalman Filter (EKF) in downlink-based system. The EKF tracks the clock bias between the two chips; consequently, prior calibration is unnecessary, as it is done online. Moreover, precise localization is enabled through the algorithm that resolves the ambiguity of PDoA measurements. The positioning performance evaluation shows improvement in accuracy w.r.t. the TDoA-only solution. The the root-mean-square error decreased from 16.38 cm to 15.09 cm, i.e., 8%, when evaluated among all test points. In the best case, reduction from 14.79 cm to 10.14 cm, i.e., 35% was observed.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE Access
ISSN
2169-3536
e-ISSN
2169-3536
Volume of the periodical
13
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
81628-81642
UT code for WoS article
001488488800010
EID of the result in the Scopus database
2-s2.0-105004694135