Study on Eye Movements of Information Omission/Misjudgment in Radar Situation-Interface

Radar situation interface belongs to a sub-interface of a complex system. Because the information in human-computer interaction interface of a complex system is of a large amount and in complicated relationships, it is apt to cause misreading, misjudgment and information omission in the target search. The critical factors causing error problems like information omission and misjudgment in the radar situation interface are analyzed. Based on the behavioral data and the physiological data derived from eye movement tracking, the misperception factors leading to users’ information omission/misjudgment are detected. The experimental results showed that, (1) Both interval size and vision position impose a significant influence on the visual cognition of target search. The interval should not be too large for target search in the situation interface, otherwise it may result in long reaction time and omission and misjudgment. (2) During the target search in the upper vision, lower vision and peripheral vision, the reaction time and the error rate present significant changes, and the reaction time of peripheral vision achieves the longest. The vision position also exerts a remarkable influence on the first saccade latency. The fixation duration and fixation point number display obvious changes, and the mean fixation duration of the lower vision is the longest while its fixation point number is the smallest, which is apt to cause misjudgment and omission of information. (3) Eye movement plots can effectively reflect the process of information search, and the gaze plot and the heat point map can present the relevant factors of information omission. And the conclusion reached can be used as reference for the information design and layout of the situation interface of future complex system, so as to effectively improve the misperception problems like omission and misjudgment in the target search process.