摘要
目的 探讨在模拟客观的视觉环境中海军飞行员对不同对比度运动目标的识别效能 ,为保障在不同能见度条件下的安全飞行提供科学依据。方法 用自行研制的视觉运动目标作业效能测试系统 ,检测 31名海军飞行员对不同对比度连续运动目标的发现和辨认效能 ,记录其反应时、辨认距离和正确率。结果 随着对比度的增高 ,对运动目标的发现时间缩短 (P<0 .0 1) ,发现距离延长 (P<0 .0 1) ;对运动目标辨认的反应时间缩短 ,正确率增加 ,识别距离延长。对比度由 3%增加到 30 % ,各项指标变化幅度较大 (P<0 .0 1)。结论 检测对不同对比度运动目标的视觉作业效能是评价海军飞行员视工效的有效方法。
Objective To explore naval pilot's visual effectiveness in identifying moving targets of different contrast.Methods 31 naval pilot's visual identification effectiveness were measured by using vision task efficiency testing system,and the reaction time,target detection distance and correct percentage were recorded. Results As target contrast was increased,the reaction time for finding and identifying targets got shorter;detection distance got longer; correct percentage identification target got higher.As target contrast increased from 3% to 30%,the change range of those measured values got bigger( P <0.01).Conclusion Examining the visual effectiveness in identifying moving targets of different contrast should be an efficient method to evaluate navy pilot's visual efficiency.
出处
《中华航海医学与高气压医学杂志》
CAS
CSCD
2003年第4期200-203,共4页
Chinese Journal of Nautical Medicine and Hyperbaric Medicine
