Optimization of time synchronization and algorithms with tdoa based indoor positioning technique for internet of things

Kun Zhao; Tiantian Zhao; Zhengqi Zheng; Chao Yu; Difeng Ma; Khaled Rabie; Rupak Kharel

doi:10.3390/s20226513

Optimization of time synchronization and algorithms with tdoa based indoor positioning technique for internet of things

Kun Zhao^*, Tiantian Zhao, Zhengqi Zheng, Chao Yu, Difeng Ma, Khaled Rabie, Rupak Kharel

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

To provide high-precision positioning for Internet of Things (IoT) scenarios, we optimize the indoor positioning technique based on Ultra-Wideband (UWB) Time Difference of Arrival (TDOA) equipment. This paper analyzes sources of positioning error and improves the time synchronization algorithm based on the synchronization packet. Then we use the labels of the known position to further optimize the time synchronization performance, and hence improve TDOA measurements. After time synchronization optimization, a Weighted Least Square (WLS) and Taylor coordination algorithm is derived. Experiments show that our optimization reduces the average positioning error from 54.8 cm to 12.6 cm.

Original language	English
Article number	6513
Pages (from-to)	1-17
Number of pages	17
Journal	Sensors (Switzerland)
Volume	20
Issue number	22
DOIs	https://doi.org/10.3390/s20226513
State	Published - 2 Nov 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Indoor positioning
TDOA
Time synchronization
UWB
WLS

ASJC Scopus subject areas

Analytical Chemistry
Information Systems
Atomic and Molecular Physics, and Optics
Biochemistry
Instrumentation
Electrical and Electronic Engineering

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Cite this

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abstract = "To provide high-precision positioning for Internet of Things (IoT) scenarios, we optimize the indoor positioning technique based on Ultra-Wideband (UWB) Time Difference of Arrival (TDOA) equipment. This paper analyzes sources of positioning error and improves the time synchronization algorithm based on the synchronization packet. Then we use the labels of the known position to further optimize the time synchronization performance, and hence improve TDOA measurements. After time synchronization optimization, a Weighted Least Square (WLS) and Taylor coordination algorithm is derived. Experiments show that our optimization reduces the average positioning error from 54.8 cm to 12.6 cm.",

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AU - Zhao, Tiantian

AU - Zheng, Zhengqi

AU - Yu, Chao

AU - Ma, Difeng

AU - Rabie, Khaled

AU - Kharel, Rupak

PY - 2020/11/2

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N2 - To provide high-precision positioning for Internet of Things (IoT) scenarios, we optimize the indoor positioning technique based on Ultra-Wideband (UWB) Time Difference of Arrival (TDOA) equipment. This paper analyzes sources of positioning error and improves the time synchronization algorithm based on the synchronization packet. Then we use the labels of the known position to further optimize the time synchronization performance, and hence improve TDOA measurements. After time synchronization optimization, a Weighted Least Square (WLS) and Taylor coordination algorithm is derived. Experiments show that our optimization reduces the average positioning error from 54.8 cm to 12.6 cm.

AB - To provide high-precision positioning for Internet of Things (IoT) scenarios, we optimize the indoor positioning technique based on Ultra-Wideband (UWB) Time Difference of Arrival (TDOA) equipment. This paper analyzes sources of positioning error and improves the time synchronization algorithm based on the synchronization packet. Then we use the labels of the known position to further optimize the time synchronization performance, and hence improve TDOA measurements. After time synchronization optimization, a Weighted Least Square (WLS) and Taylor coordination algorithm is derived. Experiments show that our optimization reduces the average positioning error from 54.8 cm to 12.6 cm.

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KW - Time synchronization

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KW - WLS

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Optimization of time synchronization and algorithms with tdoa based indoor positioning technique for internet of things

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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