Localization of Wearable Ultrawideband Antennas for Motion Capture Applications

This letter presents a study of human body localization using ultrawideband (UWB) technology. Various base-station configurations, time of arrival, and first peak detection algorithms are used to estimate the position of the body-worn antennas. Localization error as small as 1-2 cm has been achieved...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2014, Vol.13, p.507-510
Main Authors: Bharadwaj, Richa, Swaisaenyakorn, Srijittra, Parini, Clive G., Batchelor, John, Alomainy, Akram
Format: Article
Language:English
Subjects:
Accuracy
Antennas
Base stations
Error analysis
Errors
Estimation
Localization
motion capture
Motion perception
Position (location)
Sensors
Stations
Ultra wideband antennas
Ultrawideband
Wideband communications
Wireless communications
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Summary:This letter presents a study of human body localization using ultrawideband (UWB) technology. Various base-station configurations, time of arrival, and first peak detection algorithms are used to estimate the position of the body-worn antennas. Localization error as small as 1-2 cm has been achieved using eight base stations, which is comparable to the measurement accuracy obtained by a complex optical motion capture system to determine the absolute displacement error. The localization error obtained is better by a third in comparison to common commercial system based on UWB technology. The results demonstrate that cuboid-shape configuration with four base stations gives slightly low average percentage error (2%-3%) in comparison to Y-shape (4%). However, the Y-shape configuration is more compact and provides setting-up simplicity, which makes it convenient for various applications ranging from healthcare monitoring to entertainment technologies either laboratory-based or in-home.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2014.2309977