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Decawave UWB Clock Drift Correction and Power Self-Calibration

: Sidorenko, Juri; Schatz, Volker; Scherer-Negenborn, Norbert; Arens, Michael; Hugentobler, Urs

Fulltext urn:nbn:de:0011-n-5524720 (1.3 MByte PDF)
MD5 Fingerprint: a5df485c7ed0e8fcc9dbbba37cd2901e
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Created on: 30.7.2019

Sensors. Online journal 19 (2019), No.13, Art. 2942, 16 pp.
ISSN: 1424-8220
ISSN: 1424-8239
ISSN: 1424-3210
Journal Article, Electronic Publication
Fraunhofer IOSB ()

The position accuracy based on Decawave Ultra-Wideband (UWB) is affected mainly by three factors: hardware delays, clock drift, and signal power. This article discusses the last two factors. The general approach to clock drift correction uses the phase-locked loop (PLL) integrator, which we show is subject to signal power variations, and therefore, is less suitable for clock drift correction. The general approach to the estimation of signal power correction curves requires additional measurement equipment. This article presents a new method for obtaining the curve without additional hardware and clock drift correction without the PLL integrator. Both correction methods were fused together to improve two-way ranging (TWR).