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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 the recognition efficiency of naval pilots in moving objects with different contrast in a simulated objective visual environment and provide a scientific basis for ensuring safe flight under different visibility conditions. Methods Using self-developed vision moving target operating efficiency test system, the effectiveness of 31 naval pilots in detecting and identifying continuous moving targets with different contrasts was tested. The response time, the recognition distance and the correct rate were recorded. Results With the increase of contrast, the detection time of moving target was shortened (P <0.01), and the distance was found to be longer (P <0.01). The response time to recognition of moving target was shortened, the accuracy was increased, and the recognition distance extend. The contrast ratio increased from 3% to 30%, and the indexes varied greatly (P <0.01). Conclusion The visual operating efficiency of detecting moving objects with different contrast is an effective method to evaluate navigational pilots efficiency.