No abstract
The lack of situation awareness (SA) is the main reason for tower controllers' human errors. How to evaluate the SA of tower controllers is an important problem for controlling the risk of air traffic control system. The current method of measuring the SA of air traffic controllers by using eye movement analysis focuses on radar controllers. To verify the applicability of eye movement analysis in measuring the SA of tower controllers, an experiment platform was built by using the eye tracker and tower control simulation software. The comparison of the two group features including SA, task load, and operation performance, were conducted by the nearest neighbor index (NNI). Results show that the subjects whose fixation feature is dispersed distribution have high SA and improve operation performance under a low task load. The Pearson correlation coefficient between the NNI and SA reveals a significant positive moderate association (r=0.602, p<0.01). Eye tracking can measure the SA of tower controllers, and the NNI can be an auxiliary eye index for SA measurement in dynamic, uncontrolled environments. The conclusion of this study can provide a new reference index for the real-time quantitative assessment of tower controllers' situation awareness level.
This paper aims to improve the usability of Mission Planner UAV ground control system's interface through interface improvement. The questionnaire survey and user interview were utilized to evaluate the usability of the UAV ground control system's interface, and the C programming language was used to improve the usability problems. Then, the eye-tracking experiment was designed to compare the difference in usability between the improved system interface and the original system interface, which was used to verify that the improvement to the system interface was effective. The result showed that the usability problems mainly existed in flexibility, minimal user action, minimal memory burden, and user guidance dimension, and the analysis result of multiple indexes such as task completion time, mouse click and fixation points indicate that the usability of the improved system interface was better than the original system.
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