Abstract
In this paper, the design of a robust UKF-IMM filter for tracking a fulltime off-road ground target is studied and carried out. A detailed description of the target dynamic systems with respect to motion modelling is done for a sharply maneuvering target. A four model IMM filter with two discrete white noise acceleration models and two horizontal coordinated turn models is proposed. In this IMM filter, a low noise and high noise model is proposed for the two pairs of motion models. Low noise model for non-maneuvering or slow maneuvering situations and high noise model for quick and sharp maneuvering situations. The Unscented Kalman filter is used as the base filter due to the highly nonlinear horizontal coordinated turn model with unknown turn rates along with linear Kalman filter for linear systems. Simulation is carried out and results are presented showing the performance of the proposed estimator and demonstrates its capability to perform its designed purpose. The simulated results show that the four model IMM filter can track the highly maneuvering off-road target with acceptable error margin. The error dynamics are observed to be stable with good maneuver detection characteristics. The proposed filter has a low computation complexity and therefore can be adapted to most computers.
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Recommended by Associate Editor M. Chadli under the direction of Editor Chan Gook Park. This research was part of the project titled “Development of Eco-friendly Harvester for Manila Clam,” funded by the Ministry of Oceans and Fisheries, Korea.
Jae Weon Choi received his B.S., M.S., and Ph.D. degrees all in control and instrumentation Engineering from Seoul National University, Seoul, Korea, in 1987, 1989, and 1995, respectively. He is currently a Professor in the School of Mechanical Engineering, and has several positions at Pusan National University, Korea including the President of Research Institute of Mechanical Technology, Director of Office for Education Accreditation, and Director of Alliance of BEE Centers. He also had visiting professor positions at M.I.T., Cambridge, MA from August 2003 to August 2004, and at The George Washington University, Washington D.C., from September 2011 for a year. Dr. Choi is a Senior Member of IEEE and AIAA. He is also a member of both IFAC Technical Committee on Linear Systems and Aerospace Committees. He had served from 2003 to 2011 as an Editor for the International Journal of Control, Automation and Systems, and an Associate Editor for over ten years in Conference Editorial Board of IEEE Control Systems Society since 2000. His current research interests include spectral theory for linear time-varying systems, eigen structure assignment for linear time-varying systems with applications to auto pilot design, target tracking filter design, and control and sensor network technologies with applications to aquaculture plants.
Kangwagye Samuel was born in Mbarara, Uganda. He received a master’s degree in mechanical engineering at Pusan National University, Busan, Korea, in 2018. His research focuses on design of guidance, navigation and control systems and the main interests include design of Kalman filters, sensor fusion, estimation theory and control systems design.
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Choi, J.W., Samuel, K. Robust UKF-IMM Filter for Tracking an Off-road Ground Target. Int. J. Control Autom. Syst. 17, 1149–1157 (2019). https://doi.org/10.1007/s12555-018-0249-9
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DOI: https://doi.org/10.1007/s12555-018-0249-9