Implementation Challenges of Synchronisation of UWB Nodes in TDoA Structures

Zandian, Reza; Witkowski, Ulf

doi:10.1109/ipin.2018.8533796

Cited by 11 publications

(9 citation statements)

References 18 publications

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“…In principle, the TDoA approach can be implemented in two ways, called as unilateral and multilateral techniques [115], [116]. In the unilateral system, the anchors transmit a signal and the tags measure the TDOA from the received signals.…”

Section: Time Difference Of Arrivalmentioning

confidence: 99%

Precision Positioning for Smart Logistics Using Ultra-Wideband Technology-Based Indoor Navigation: A Review

et al. 2022

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Logistics is an important driver for the competitiveness of industries and material supply. The development of smart logistics, powered by precise positioning and communication technologies can significantly improve the efficiency of logistics. The emerging technology of ultra-wideband (UWB) precision positioning has attracted significant attention throughout the previous decade owing to its promising capabilities over other radio frequency-based indoor localisation systems. In addition, UWB is characterised by large bandwidth and data rate, short message length, low transmission power and high penetration capability, which are all favourable for indoor positioning applications. However, UWB localisation technology faces several challenges that are somewhat similar to other technologies, such as mitigating errors that originate from non-line-of-sight (NLOS) situations and tackling signal interference in dense environments, and when required to operate in extreme conditions. This paper reviews the most recent advances made in UWB positioning systems over the last five years, with a focus on high-ranking articles. In addition to going through more conventional solutions to UWB challenges, modern solutions, which involve the use of machine learning and sensor data fusion, are discussed. We highlight the most promising findings of the recently implemented and foreseen UWB positioning systems by providing a summary of each reviewed article. Additionally, we address a major challenge that faces the UWB positioning technology: NLOS situations, focusing on some proposed remedies such as multi-sensor fusion and machine learning. As an application, this study introduces how UWB technology promotes smart logistics by offering indoor positioning to improve efficiencies in the delivery of goods from the source to the customer. Furthermore, it demonstrates the benefits of UWB technology for accurate positioning and tracking of both stationary and moving items, and machinery in an indoor logistics environment.

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Section: Time Difference Of Arrivalmentioning

confidence: 99%

Precision Positioning for Smart Logistics Using Ultra-Wideband Technology-Based Indoor Navigation: A Review

et al. 2022

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“…Meanwhile, Ref. [21] proposes an effective synchronization method of the unilateral TDoA applied in ultra-wideband (UWB) localization systems. The authors of [22] describe an architecture of multi-level IoT positioning system to reduce the deployment cost, and [23] presents an E-DTDOA-based ranging algorithm used for clock drift estimation, which achieves high time resolution.…”

Section: Related Workmentioning

confidence: 99%

Design and Implementation of Real-Time Localization System (RTLS) Based on UWB and TDoA Algorithm

Zhang

Yang

Liu

et al. 2022

Sensors

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Nowadays, accurate localization plays an essential role in many fields, such as target tracking and path planning. The challenges of indoor localization include inadequate localization accuracy, unreasonable anchor deployment in complex scenarios, lack of stability, and the high cost. So, the universal positioning technologies cannot meet the real application requirements scarcely. To overcome these shortcomings, a comprehensive ultra wide-band (UWB)-based real-time localization system (RTLS) is presented in this paper. We introduce the architecture of a real-time localization system, then propose a new wireless clock synchronization (WCS) scheme, and finally discuss the time difference of arrival (TDoA) algorithm. We define the time-base selection strategy for the TDoA algorithm, and we analyze the relationship between anchor deployment and positioning accuracy. The extended Kalman filter (EKF) method is presented for non-linear dynamic localization estimation, and it performs well in terms of stability and accuracy on moving targets.

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“…TDOA only requires time synchronisation of the reference receivers [ 17 , 18 ]. The target P is at the intersection of two hyperbolic curves that maintain an identical range difference between different preset receivers and the same target, i.e., R 2 − R 1 and R 3 − R 1 are equal and constant, as shown in Figure 4 .…”

Section: Ranging Algorithms and Positioning Techniquesmentioning

confidence: 99%

Survey of Collision Avoidance Systems for Underground Mines: Sensing Protocols

Qian

Zhao

et al. 2022

Sensors

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With the growing number of unintentional interactions occurring in underground mines, Collision Avoidance System (CAS) establishment and maintenance has become an urgent need for mining industries to enhance their risk profile and improve construction safety. Usually, most collision accidents can be divided into three different categories in line with the involved participants and infrastructure condition. The accidents pose a great risk of financial cost to mining companies and even cause casualties. In detail, this paper presents an intensive study survey of positioning techniques, including ranging algorithms, to accommodate the demands of various proximity sensors and improve the capability of situational awareness. Then, we exploit the importance of the communication system, prevalent low-power wide-area technologies and related communication protocols. The effectiveness of communication systems decides and facilitates the success of the final integrated system that can be used to fundamentally address the problem of collision avoidance. For the purpose of collaboration between communication systems and other executive departments, a series of systematic comparisons of pertinent technologies and algorithms is given near the end, followed by a brief discussion on the best choice among these options. In the proposed solution, the overall end-to-end delay can be minimised to a few nanoseconds and the localisation accuracy can achieve centimetre level when operating in the range of 100 m.

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Implementation Challenges of Synchronisation of UWB Nodes in TDoA Structures

Cited by 11 publications

References 18 publications

Precision Positioning for Smart Logistics Using Ultra-Wideband Technology-Based Indoor Navigation: A Review

Precision Positioning for Smart Logistics Using Ultra-Wideband Technology-Based Indoor Navigation: A Review

Design and Implementation of Real-Time Localization System (RTLS) Based on UWB and TDoA Algorithm

Survey of Collision Avoidance Systems for Underground Mines: Sensing Protocols

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