A large amount of information is included in the human-computer interface of modern vehicle-mounted weapons. Properly presenting information and a rational configuration of the interface can improve the fighting efficiency. For the purpose of exploring human's target identification performance under multiple tasks, a model is designed to simulate the two-task situation. Through recording and analyzing the identification response times and accuracies of target at different locations, the performance can be fully evaluated. Scientific evidences for designing the interface are acquired by comparing the human performances at different locations. Experimental results show that human target identification performance is influenced by target location. When a dark gray background is used and under the condition of multiple tasks, human response time and accuracy to target appearing at bottom-left of the interface have absolute advantage over at other locations. The performance corresponds to targets appearingat top-right and bottom-right corners is inferior to that at bottom-left. Thus information of different importancesshoudbe presented at different locations for improving the real-war efficiency.

human-computer interface  /  multi-task  /  target location  /  target identification