Abstract
A single vision system is the simplest vision-based method of simultaneous localization and mapping (SLAM) but it cannot reduce navigation errors that occur in the direction of the optical axis of vision sensors. Moreover, the limited observation area of vision sensors sometimes leads to failure in tracking a feature point. A vision sensor-based inertial navigation system INS/SLAM integrated system performs better with multiple vision sensors than with a single vision sensor because the observation area is wider and the impact of the sensitivity of the vision sensors is considerably smaller. However, the geometrical arrangement of multiple vision sensors induces navigation errors. This paper analyzes how the performance of the vision sensor-based INS/SLAM integrated system varies in relation to the geometrical arrangement of multiple vision sensors and the observation area of the vision sensors. The analysis shows that vertical navigation errors decline when the vision sensors are aimed horizontally, and that horizontal navigation errors decline in a similar manner when the vision sensor is aimed vertically; moreover, this behavior is especially evident when the level of sensitivity peaks in the horizontal direction.
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Recommended by Editorial Board member Kang-Hyun Jo under the direction of Editor Myotaeg Lim.
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2009-0090722).
Sebum Chun received his Ph.D. degree in Aerospace Engineering from Konkuk University in 2008. He is a senior researcher in the Satellite Navigation team, CNS/ATM and Satellite Navigation Research Center in Korea Aerospace Research Institute (KARI). His research interests include GPS, INS, SLAM and non-linear system state estimation.
Dae Hee Won received his B.S. and M.S. degrees in Aerospace Information Engineering from Konkuk University, Korea, in 2006 and 2008, respectively. He is a Ph.D. candidate in the Department of Aerospace Information Engineering at Konkuk University. His research interests include GPS/INS/Vision system integration, GPS RTK, and nonlinear estimation
Moon-Beom Heo received his M.S. and Ph.D. degrees in Mechanical and Aerospace Information Engineering from Illinois Institute of Technology, U.S. in 1997 and 2004, respectively. He is the head of the Satellite Navigation team, CNS/ATM and Satellite Navigation Research Center in Korea Aerospace Research Institute (KARI). His research interests include GNSS-based navigation system including Ground Based Augmentation System (GBAS).
Young Jae Lee is a Professor in the Department of Aerospace Information Engineering at Konkuk University, Korea. He received his Ph.D. degree in Aerospace Engineering from the University of Texas at Austin in 1990. His research interests include integrity monitoring of GNSS signal, GBAS, RTK, attitude determination, orbit determination, and GNSS-related engineering problems.
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Chun, S., Won, D.H., Heo, MB. et al. Performance analysis of an INS/SLAM integrated system with respect to the geometrical arrangement of multiple vision sensors. Int. J. Control Autom. Syst. 10, 288–297 (2012). https://doi.org/10.1007/s12555-012-0209-8
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DOI: https://doi.org/10.1007/s12555-012-0209-8