Decawave UWB clock drift correction and power self-calibration

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

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

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).

Original languageEnglish
Article number2942
JournalSensors (Switzerland)
Volume19
Issue number13
DOIs
StatePublished - 1 Jul 2019

Keywords

  • Navigation
  • Time of arrival (TOA)
  • Ultra-wideband (UWB)

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