Research On The Evaluation Of Controller’s Situational Awareness

In the air transportation industry,air traffic control is an important part of it.On the one hand,its safe operation has always been a key concern of the Civil Aviation Administration.The main body of the control work,the controller,bears important responsibilities in ensuring the safety of civil aviation.On the other hand,the controller maintains a good situational awareness is a necessary condition to ensure the safe and efficient operation of air traffic control.Once the controller’s situational awareness is reduced or lost,it is very likely to cause aircraft delays,air traffic jams,dangerous situations or even accidents,and the losses caused by them will be difficult to estimate.Therefore,the research on the situational awareness assessment of controllers still has important research value and practical significance in future aviation operations.The main work of the thesis is as follows:First,based on the fault tree theory,a fault tree model of the controller’s situational awareness loss is constructed.Analyzed the reasons for the controller’s situational awareness loss from top to bottom through the fault tree analysis method,and the fault tree model of the controller’s situational awareness loss is established.Second,in the evaluation of controller fatigue indicators,design experiments to analyze the changes of controller fatigue indicators with the order of control and fit the change trend curve.Targeted selection of 40 in-service controllers were conducted before and after the night shifts of large and small night shifts to collect and complete EEG signals under different traffic levels,extract fatigue indicators,and compare them according to the age of the controllers.Divide into 2 groups for comparative analysis,and linearly fit the controller fatigue index before and after the shift.Third,in the evaluation of the controller’s gaze behavior indicators,a spatial Markov transition matrix is constructed to analyze the controller’s gaze behavior.Based on the eye movement data measured by the control simulator mission,the eight aircrafts in the control process are designated as dynamic interest areas,and the spatial Markov transition matrix is constructed,and the attention of 40 controllers under the condition of space lag is calculated.Force transfer probability,analyze the direction and degree of influence of each interest area by the surrounding interest area.Fourth,in terms of the comprehensive assessment of the controller’s situational awareness level,a situational awareness evaluation model is established to comprehensively score the controller’s situational awareness level.Statistics teachers score,fatigue index value,fatigue self-test score and gaze index value four evaluation items.Determine the proportion based on the structural importance coefficient calculated by the fault tree model,and comprehensively evaluate the situational awareness level of 40 controllers.