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• W4312972079 endingPage "1435" @default.
• W4312972079 startingPage "1423" @default.
• W4312972079 abstract "The existing gravity matching algorithms are affected by the initial position error of the inertial navigation system (INS), the gravity measurement error, and the similarity of the gravity background map. Aiming at the above problems, an improved particle filter based on the gravity measurement feature (IPFBGMF) is proposed in this article. In the IPFBGMF, both the value and change characteristic of gravity measurements are considered, and a novel position acquisition method based on the gravity measurement feature is proposed, which can reduce the influence of the initial position error of INS. In addition, a new concept called direction measurement using the heading angle of INS is proposed to optimize the weight of particles in the PF. The PF with direction measurement can reduce the influence of the gravity measurement error and the similarity of the gravity background map. Furthermore, the robustness of the improved PF with the precise position is proven. Finally, a navigation strategy is designed to apply the proposed algorithms. Simulations show that IPFBGMF has the highest positioning accuracy compared with the traditional gravity matching algorithms." @default.
• W4312972079 created "2023-01-05" @default.
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• W4312972079 date "2023-01-15" @default.
• W4312972079 modified "2023-10-18" @default.
• W4312972079 title "An Improved Particle Filter Based on Gravity Measurement Feature in Gravity-Aided Inertial Navigation System" @default.
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• W4312972079 doi "https://doi.org/10.1109/jsen.2022.3226747" @default.
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