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Type: Conference paper
Title: Outlier-robust manifold pre-integration for INS/GPS fusion
Author: Ch'ng, S.F.
Khosravian Hemami, A.
Doan, A.
Chin, T.J.
Citation: Proceedings of the ... IEEE/RSJ International Conference on Intelligent Robots and Systems. IEEE/RSJ International Conference on Intelligent Robots and Systems, 2019, pp.7489-7496
Publisher: IEEE
Publisher Place: online
Issue Date: 2019
Series/Report no.: IEEE International Conference on Intelligent Robots and Systems
ISBN: 9781728140049
ISSN: 2153-0858
Conference Name: IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) (4 Nov 2019 - 8 Nov 2019 : Macau, China)
Statement of
Shin-Fang Ch'ng, Alireza Khosravian, Anh-Dzung Doan and Tat-Jun Chin
Abstract: We tackle the INS/GPS sensor fusion problem for pose estimation, particularly in the common setting where the INS components (IMU and magnetometer) function at much higher frequencies than GPS, and where the magnetometer and GPS are prone to giving erroneous measurements (outliers) due to magnetic disturbances and glitches. Our main contribution is a novel non-linear optimization framework that (1) fuses preintegrated IMU and magnetometer measurements with GPS, in a manner that respects the manifold structure of the state space; and (2) supports the usage of robust norms and efficient large scale optimization to effectively mitigate the effects of outliers. Through extensive experiments, we demonstrate the superior accuracy and robustness of our approach over filtering methods (which are customarily applied in the target setting) with minimal impact to computational efficiency. Our work further illustrates the strength of optimization approaches in state estimation problems and paves the way for their adoption in the control and navigation communities.
Rights: ©2019 IEEE
DOI: 10.1109/IROS40897.2019.8967643
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Computer Science publications

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