An UWB correlation receiver for performance assessment of synchronization algorithms

Zwirełło, Łukasz; Heine, Christoph; Li, Xuyang; Zwick, Thomas

doi:10.1109/icuwb.2011.6058829

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…This is essential for proper operation of the time-todigital converter (see next section). More information about the performance of the transceiver single building blocks can be found in [20,21].…”

Section: Uwb Hardware and Tdoa Setupmentioning

confidence: 99%

UWB Localization System for Indoor Applications: Concept, Realization and Analysis

Zwirełło

Schipper

Harter

et al. 2012

Journal of Electrical and Computer Engineering

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A complete impulse-based ultrawideband localization demonstrator for indoor applications is presented. The positioning method, along with the method of positioning error predicting, based on scenario geometry, is described. The hardware setup, including UWB transceiver and time measurement module, as well as the working principles is explained. The system simulation, used as a benchmark for the quality assessment of the performed measurements, is presented. Finally, the measurement results are discussed. The precise analysis of potential error sources in the system is conducted, based on both simulations and measurement. Furthermore, the methods, how to improve the average accuracy of 9 cm by including the influences of antennas and signal-detection threshold level, are made. The localization accuracy, resulting from those corrections, is 2.5 cm.

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Section: Uwb Hardware and Tdoa Setupmentioning

confidence: 99%

UWB Localization System for Indoor Applications: Concept, Realization and Analysis

Zwirełło

Schipper

Harter

et al. 2012

Journal of Electrical and Computer Engineering

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“…The signal in the delay loop resets the D-latch to low and hence controls the duration of the digital pulse (set to 3 ns in this experiment). The threshold detector and pulse extension circuit were previously described in [35]. The digitized impulse is then forwarded to the time measurement unit (time-to-digital converter, TDC).…”

Section: Transceivermentioning

confidence: 99%

Realization Limits of Impulse-Based Localization System for Large-Scale Indoor Applications

Zwirełło

Schipper

Jalilvand

et al. 2015

IEEE Trans. Instrum. Meas.

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In this paper, a 3D indoor localization demonstrator on the basis of impulse-radio ultrawideband (UWB) technology and time-difference-of-arrival (TDOA) principle is developed and analyzed. The parameters of the transmitter and receiver hardware components are investigated to determine their influence on the localization performance. The signal detection method based on a comparator and the precise time measurement unit was examined. Two effects, namely the threshold-trigger offset and the TDOA variance errors, were quantified. Corrections methods of both these phenomena have been proposed, which delivered very good results in the experiments. With the identified and modeled inaccuracies, the Cramer-Rao lower bound for a 3D TDOA localization system is derived for the first time and verified by measurements, performed in a large-scale industrial environment. The results obtained from measurements follow closely the variance predicted by the CRLB. Moreover, the comparison with the literature published up to date proves the excellent performance of the system presented here.Index Terms-Accuracy, Cramer-Rao lower bound (CRLB), localization, positioning, precision, time-difference-of-arrival (TDOA), ultrawideband (UWB).

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Impact of the antenna impulse response on accuracy of impulse-based localization systems

Zwirełło

Reichardt

et al. 2012

2012 6th European Conference on Antennas and Propagation (EUCAP)

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An UWB correlation receiver for performance assessment of synchronization algorithms

Cited by 8 publications

References 6 publications

UWB Localization System for Indoor Applications: Concept, Realization and Analysis

UWB Localization System for Indoor Applications: Concept, Realization and Analysis

Realization Limits of Impulse-Based Localization System for Large-Scale Indoor Applications

Impact of the antenna impulse response on accuracy of impulse-based localization systems

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