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Dynamic Deformation Monitoring of Offshore Oil Platforms with Integrated GNSS and Accelerometer

Author

Listed:
  • Songliangzi Yang

    (College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, China
    Chinese Academy of Surveying and Mapping, Beijing 100036, China)

  • Changhui Xu

    (Chinese Academy of Surveying and Mapping, Beijing 100036, China)

  • Jinzhong Mi

    (Chinese Academy of Surveying and Mapping, Beijing 100036, China)

  • Shouzhou Gu

    (Chinese Academy of Surveying and Mapping, Beijing 100036, China)

Abstract

Dynamic deformation monitoring is a crucial component of the structural health monitoring of an offshore oil platform. Given the insensitivity of the Global Navigation Satellite System (GNSS) to high-frequency vibration information, a combination of GNSS and accelerometer is used for vibration monitoring of platform structures. A hybrid filter based on complementary ensemble empirical mode decomposition (CEEMD) combined with a Chebyshev filter is proposed to process the monitoring data. The extracted GNSS low-frequency displacement is fused with the high-frequency displacement obtained from acceleration integration to obtain the overall dynamic displacement of the platform. The experimental analysis shows that the combination of t -test and correlation coefficient can select the required intrinsic mode function (IMF), the proposed hybrid filter can reduce the noise error to a certain extent, and the quadratic frequency domain integration of the acceleration data can avoid the influence of the integration trend term. The correlation coefficient between the overall reconstructed displacement and the original GNSS monitoring data was 0.8576, and the signal correlation after denoising and refactoring was more than 85%, thereby preserving the essential information components. Integrated GNSS and accelerometer monitoring systems complement each other’s advantages, compensating for their shortcomings in monitoring the dynamic deformation of a structure.

Suggested Citation

  • Songliangzi Yang & Changhui Xu & Jinzhong Mi & Shouzhou Gu, 2022. "Dynamic Deformation Monitoring of Offshore Oil Platforms with Integrated GNSS and Accelerometer," Sustainability, MDPI, vol. 14(17), pages 1-17, August.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:17:p:10521-:d:895833
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    Cited by:

    1. Chao Liu & Qingjie Xu & Ya Fan & Hao Wu & Jian Chen & Peng Lin, 2023. "Detection of Abnormal Data in GNSS Coordinate Series Based on an Improved Cumulative Sum," Sustainability, MDPI, vol. 15(9), pages 1-16, April.

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