Analysis of Performance and Limits of Decawave PDOA1000 Using an Offline Offset Calibration in an LOS Environment 


Vol. 46,  No. 4, pp. 767-776, Apr.  2021
10.7840/kics.2021.46.4.767


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  Abstract

This paper analyzes the performance and limits of Decawave PDOA1000, which is a UWB (ultra-wideband) localization kit equipped with a two-element array antenna, through experiments in a LOS (line-of-sight) environment. PDOA1000 employs a localization method based on TWR (two-way ranging) and PDOA (phase difference of arrival) measurements, which contain relative distance and angle information between two nodes. Due to the offset from the array antenna, PDOA1000 requires an offset calibration for achieving a centimeter-level localization accuracy and Decawave recommends an offline offset calibration, which estimates the offset in TWR and PDOA measurements with perfect knowledge on locations and face-to-face antenna orientation for a pair of UWB nodes in the offline phase and removes the offset estimates from the measurements in the online phase. In this paper, we analyzes the performance, error characteristics, and limits of PDOA1000 using the offline calibration to show its validity. Through LOS experiments, we showed that offset residuals, which are remaining errors in the calibrated measurements, can cause localization errors of around 0.26m.

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  Cite this article

[IEEE Style]

J. Seo, M. Heo, S. Lee, "Analysis of Performance and Limits of Decawave PDOA1000 Using an Offline Offset Calibration in an LOS Environment," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 4, pp. 767-776, 2021. DOI: 10.7840/kics.2021.46.4.767.

[ACM Style]

Jae-Hee Seo, Moon-Beom Heo, and Sangwoo Lee. 2021. Analysis of Performance and Limits of Decawave PDOA1000 Using an Offline Offset Calibration in an LOS Environment. The Journal of Korean Institute of Communications and Information Sciences, 46, 4, (2021), 767-776. DOI: 10.7840/kics.2021.46.4.767.

[KICS Style]

Jae-Hee Seo, Moon-Beom Heo, Sangwoo Lee, "Analysis of Performance and Limits of Decawave PDOA1000 Using an Offline Offset Calibration in an LOS Environment," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 4, pp. 767-776, 4. 2021. (https://doi.org/10.7840/kics.2021.46.4.767)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880