Prof. Sean Tong Profile

Prof. Sean Tong

at Hefei Univ of Technology

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Proceedings Article | 15 November 2017 Paper

Robotic fish tracking method based on suboptimal interval Kalman filter

Xiaohong Tong, Chao Tang

Proceedings Volume 10605, 106051J (2017) https://doi.org/10.1117/12.2288914

KEYWORDS: Filtering (signal processing), Robotics, Monte Carlo methods

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Autonomous Underwater Vehicle (AUV) research focused on tracking and positioning, precise guidance and return to dock and other fields. The robotic fish of AUV has become a hot application in intelligent education, civil and military etc. In nonlinear tracking analysis of robotic fish, which was found that the interval Kalman filter algorithm contains all possible filter results, but the range is wide, relatively conservative, and the interval data vector is uncertain before implementation. This paper proposes a ptimization algorithm of suboptimal interval Kalman filter. Suboptimal interval Kalman filter scheme used the interval inverse matrix with its worst inverse instead, is more approximate nonlinear state equation and measurement equation than the standard interval Kalman filter, increases the accuracy of the nominal dynamic system model, improves the speed and precision of tracking system. Monte-Carlo simulation results show that the optimal trajectory of sub optimal interval Kalman filter algorithm is better than that of the interval Kalman filter method and the standard method of the filter.

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