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- W4313854520 abstract "It is well known that INS/GNSS integrated system is either unavailable or unreliable in high-rise buildings environment. This study proposes a novel framework to fuse Odometer, INS, and GNSS to provide robust pose estimation for the mentioned challenge. Motivated by the disadvantage of the recent development of 3DDR/GNSS, we relax its assumption where velocities and accelerometer biases are estimated without sensor pre-calibration. In particular, the traditional INS/GNSS and DR/GNSS are augmented into a single system without conflict to perform EKF. Moreover, inequalities-constrained EKF is derived based on the characteristic of the presented system to increase the robustness. This constraint exploits an empirical observable where the position estimation of the odometer is considered more accurate than INS since it only requires one-step integration. The proposed approach is validated through an author-designed Unreal Engine challenging map with the AirSim plugin of an autonomous ground vehicle. The results show a significant accuracy improvement in which the position and velocity error have been reduced respectively 68% and 39% on average over a 0.81km driving." @default.
- W4313854520 created "2023-01-10" @default.
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- W4313854520 date "2022-11-27" @default.
- W4313854520 modified "2023-10-16" @default.
- W4313854520 title "An Improvement of 3D DR/INS/GNSS Integrated System using Inequality Constrained EKF" @default.
- W4313854520 cites W1564768010 @default.
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- W4313854520 doi "https://doi.org/10.23919/iccas55662.2022.10003721" @default.
- W4313854520 hasPublicationYear "2022" @default.
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