Autonomous Navigation Method for Mars Rover Using Distributed EKF-SLAM Assisted by Sun Sensor

PEI Fujun1,2, YAN Hong1,2, ZHU Mingjun1,2

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Journal of Deep Space Exploration ›› 2020, Vol. 7 ›› Issue (2) : 191-196. DOI: 10.15982/j.issn.2095-7777.2020.20171117001
Article

Autonomous Navigation Method for Mars Rover Using Distributed EKF-SLAM Assisted by Sun Sensor

  • PEI Fujun1,2, YAN Hong1,2, ZHU Mingjun1,2
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Abstract

Since the existing SLAM algorithm can not meet the actual demand of the Mars rover autonomous navigation problem in real-time and accuracy, a distributed EKF-SLAM algorithm is proposed based on heading assistance to achieve the rover's autonomous navigation. The solar azimuth is got by using the dual axis analog sun sensor, and then the rover heading information is calculated and added it to each subsystem of SLAM. Consequently, a SLAM model of EKF-SLAM system is built and the federal EKF is adopted to realize the state estimation of the distributed SLAM system. Finally, a whole astronomical heading assistant distributed system is constructed. The experiment test is performed in outdoor experimental environment using a mobile robot, and the experimental results demonstrate the accuracy and effectiveness of the proposed algorithm.

Keywords

Mars rover / distributed SLAM / heading assistance / Sun sensor

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PEI Fujun, YAN Hong, ZHU Mingjun. Autonomous Navigation Method for Mars Rover Using Distributed EKF-SLAM Assisted by Sun Sensor. Journal of Deep Space Exploration, 2020, 7(2): 191‒196 https://doi.org/10.15982/j.issn.2095-7777.2020.20171117001

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