An experimental study of features search under visual interference in radar situation-Interface

Abstract

As was found through information interface analysis of target search in fighter radar situation environment, there are many of visual attention problems caused by complex environment and features, which generate visual interference. This paper extracts the interference environment of situation interface and the feature of information matter as the major factors, also and adopts the interference environment, featured items and quantity as three variables to conduct the experimental study on simulation of the feature search fighter information identification. The experimental results showed that the information identification under low and high interference environments revealed to a significant difference. Due to the high interference environment formed by various information presented in the radar situation-interface, only if being forcibly free from interference could the pilots be able to realize the information identification precisely. Three features, i.e., regular shape-single color, irregular shape-single color and irregular shapehybrid color, presented a trend of progressive increase of reaction time, which suggested that irregular shape-hybrid color was the difficult cognition and the long reaction time. The eye movement data also suggested that the target search under high interference environment displayed the longer fixation time, more saccade counts and longer scan path, than under low interference environment. In addition, the first saccade time, the total fixation time and saccade counts of featured items search presented an increasing trend, which is the same as reaction. Therefore, the colors and shapes of featured items exerted a remarkable influence to the judgment of objects target. In conclusion the interference environment and the information matter features both have played the important roles in influence of the information identification in the radar situation-interface. The environment and the features are the design factors, which needed for consideration in the information layout of the complex situation-interface. Thus, a conclusion provides a design guideline to the rational layout and improvement of the complex information interface.