Cited by 10Inertial Sensor and NavigationTarget Tracking and Data Fusion in Sensor NetworksIndoor and Outdoor Localization Technologies

On the Interpretation of 3D Gyroscope Measurements

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Stančin, Sara, Tomažič, Sašo·2018·Journal of Sensors

Abstract

We demonstrate that the common interpretation of angular velocities measured by a 3D gyroscope as being sequential Euler rotations introduces a systematic error in the sensor orientation calculated during motion tracking. For small rotation angles, this systematic error is relatively small and can be mistakenly attributed to different sources of sensor inaccuracies, including output bias drift, inaccurate sensitivities, and alignments of the sensor sensitivity axes as well as measurement noise. However, even for such small angles, due to accumulation over time, the erroneous rotation interpretation can have a significant negative impact on the accuracy of the computed angular orientation. We confirm our findings using real-case measurements in which the described systematic error just worsens the deleterious effects typically attributed to an inaccurate sensor and random measurement noise. We demonstrate that, in general, significant improvement in the angular orientation accuracy can be achieved if the measured angular velocities are correctly interpreted as simultaneous and not as sequential rotations.

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Research works printed but not linked: 10

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  10. InvenSense ITG3200-3, Integrated triple-axis digital-output gyroscopeInvenSense, Sunnyvale, CA, USA, http://www .invensense.com/mems/gyro/itg3200.html. 8 Journal of Sensors

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Authors
Stančin, S., & Tomažič, S.
Affiliations
University of Ljubljana (SI)
Corresponding author
Stančin, Sara
Venue
Journal of Sensors
Publisher
Wiley
Published
2018
Volume
2018
Pages
1-8
ISSN
  • 1687-725X (ISSN-L)
  • 1687-7268
OpenAlex
W2789848590
Cited by
10
References
25
Citations by year
2024: 5 · 2021: 4 · 2020: 1
FWCI
1.02
Type
journal article
Language
en
Open access
Locations
  • Journal of Sensors (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Physical Sciences › Engineering › Aerospace Engineering › Inertial Sensor and Navigation
  • Physical Sciences › Computer Science › Artificial Intelligence › Target Tracking and Data Fusion in Sensor Networks
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Indoor and Outdoor Localization Technologies
Keywords
Euler rotation, systematic errors, sensor orientation, motion tracking, sensor misalignment, measurement noise

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