GNSS World of China

Volume 48 Issue 6
Dec.  2023
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JI Wanfeng, LI Cheng, LIU Siyuan, XU Zunyi. Navigation and positioning methods of earth gravity field[J]. GNSS World of China, 2023, 48(6): 17-26. doi: 10.12265/j.gnss.2023215
Citation: JI Wanfeng, LI Cheng, LIU Siyuan, XU Zunyi. Navigation and positioning methods of earth gravity field[J]. GNSS World of China, 2023, 48(6): 17-26. doi: 10.12265/j.gnss.2023215
shu

Navigation and positioning methods of earth gravity field

doi: 10.12265/j.gnss.2023215
  • 1.

    School of Aviation Foundation , Naval Aviation University, Yantai 264001, China

  • 2.

    Navigation and Control Technology Research Institute, China North Industries Group Corporation, Beijing 100089, China

  • 3.

    School of Science and Technology, Shandong Jianzhu University, Jinan 250101, China

  • Received Date: 2023-11-19
  • Accepted Date: 2023-11-19
    • Available Online: 2023-12-12
    Abstract
  • The paper aims at the problem that the positioning errors in the current inertial navigation system (INS) accumulate with the increase of the running time. The gravity aided navigation technology is proposed, and the dynamic base gravity sensor, real-time Marine gravity measurement of the moving base, gravity field map matching theory and matching algorithm as the core, and the related INS error model are introduced. The combined gravity /strapdown inertial navigation system (SINS) navigation method based on unscented kalman filter (UKF) is analyzed, which improves the accuracy of navigation and positioning.

     

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