Design and implementation of positioning system for embedded aeronautical ground lights
NIU Guochen1, YUAN Jie1,2, GU Runping2
1. Robotics Institute, Civil Aviation University of China, Tianjin 300300, China; 2. College of Air Traffic Management, Civil Aviation University of China, Tianjin 300300, China
Abstract：To solve the lights positioning problem for the cleaning system of aviation embedded aeronautical ground lights in the civil airport, a light positioning system based on vision was designed. Firstly, according to the installation standards, characteristics of nighttime lighting and impacts of external interference, the geometric modeling of the positioning system was designed and the parameters of cameras were optimized. Furthermore, the feasibility of system was taken into account at the same time. Then an improved algorithm of maximum between-class variance method named Otsu was proposed to achieve the adaptive threshold segmentation, and the step distance method was used to calculate the centroid of aeronautical ground lights. Finally, in order to improve the system accuracy, the system was calibrated after its errors had been analyzed. The actual experiment for the positioning system of embedded aeronautical ground lights was carried out in the nighttime environment. The experimental results show that the designed system has the advantages of high positioning speed, high accuracy with average error of 16.3mm, and it also has strong environment adaptability. This visual positioning system can effectively meet the positioning demands of aviation embedded aeronautical ground lights.
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2018, Vol. 38 
