Practical localization system for consumer devices using zigbee networks

Cho, Hyuntae; Jang, Hyunsung; Baek, Yunju

doi:10.1109/tce.2010.5606298

Cited by 25 publications

(23 citation statements)

References 15 publications

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“…However, this proposed large-scale active RFID system is merely to extend the RFID reader tag reading range, but unable to identify tags location precisely or monitor tags event status as suggested by ZITAG framework. A ZigBee-based localization system using time-difference-of-arrival (TDOA) method has been suggested in [7]. This system uses time difference between reader and device to provide location information and send to a base station which implemented centralized localization algorithm to estimate the device location.…”

Section: B Related Workmentioning

confidence: 99%

ZITAG: ZigBee Identification Tag framework for warehouse

Lim

Othman

Arshad

2012

2012 IEEE International Conference on Control System, Computing and Engineering

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Real-time inventory location sensing tracking feature demand has become an increasing trend in warehouse system. Conventional manual or computerized rack indexing, storing and retrieving process has meet limitation in view of fast turnaround inventory transaction business environment. In this paper, we proposed the ZigBee Identification Tag (ZITAG) and its design framework, which is combination of tag function and ZigBee wireless sensor node. ZITAG is embedded with readwritable unique identifier and provides real-time indoor location reference data when activated.

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Section: B Related Workmentioning

confidence: 99%

ZITAG: ZigBee Identification Tag framework for warehouse

Lim

Othman

Arshad

2012

2012 IEEE International Conference on Control System, Computing and Engineering

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“…1, the TDoA-based electronic position detection system is composed of signal reception devices isolated by space (a minimum of 4 is needed for [1][2][3][4][5]; and (3) real-time technology to estimate and trace the threat location with the use of TDoA [6,7]. If a TDoA-based electric surveillance system fails to achieve precise time synchronization between devices in separation distance operation, it is impossible to obtain correct TDoA values from signals sent by signal-receiving devices; this failure to obtain the values directly affects the location estimation error.…”

Section: Introduction 2)mentioning

confidence: 99%

A Study of High-Precision Time-Synchronization for TDoA-Based Location Estimation

Kim¹,

Eom²

2013

KIPS Transactions on Computer and Communication Systems

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Presently, there are many different technologies used for position detection. However, as signal-receiving devices operating in different locations must detect the precise position of objects located at long distances, it is essential to know the precise time at which an object's or a user's terminal device sends a signal. For this purpose, the existing time of arrival (ToA) technology is not sufficiently reliable, and the existing time difference of arrival (TDoA) technology is more suitable. If a TDoA-based electric surveillance system and other tracking devices fail to achieve precise time-synchronization between devices with separation distance operation, it is impossible to obtain correct TDoA values from the signals sent by the signal-receiving devices; this failure to obtain the correct values directly affects the location estimation error. For this reason, the technology for achieving precise time synchronization between signal-receiving devices in separation distance operation, among the technologies previously mentioned, is a core technology for detecting TDoA-based locations. In this paper, the accuracy of the proposed time synchronization and the measurement error in the TDoA-based location detection technology is evaluated. The TDoA-based location measurement error is significantly improved when using the proposed method for time-synchronization error reduction.

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“…[1] In order to provide a precision time measurement and precision time synchronization accurate to within a few nanoseconds, we present a special purpose time stamping unit, which can precisely measure the high-precision time using GPS. A practical localization method should have a highprecision and low-cost timing system.…”

Section: Introductionmentioning

confidence: 99%

Research and realization of high-precision GPS time transfer system

Zhang

Xia

Chao-hai

et al. 2013

2013 International Conference on Computational Problem-Solving (ICCP)

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This paper presents a high-precision and low-cost time transfer system based on GPS receiver and Field Programmable Gate Array (FPGA). With the aid of the precise one-pulse-per-second (1PPS) signal and the short-term frequency stability of crystal oscillator, this system can obtain highprecision absolute time which is synchronized to Universal Time Coordinated (UTC), by measuring the real-time crystal frequency. A time stamping unit would carry up time information and raw time-domain data into "snapshot" data, and then transmit them to computer for Time-Difference-Of-Arrival (TDOA) analysis. The GPS time transfer system on FPGA has been applied in a radio monitoring receiver.

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Practical localization system for consumer devices using zigbee networks

Cited by 25 publications

References 15 publications

ZITAG: ZigBee Identification Tag framework for warehouse

ZITAG: ZigBee Identification Tag framework for warehouse

A Study of High-Precision Time-Synchronization for TDoA-Based Location Estimation

Research and realization of high-precision GPS time transfer system

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