论文部分内容阅读
本文研究了短时（１小时内）作业中警戒绩效的一些影响因素。实验采用ＥＰ７１０警戒仪，研究了短时作业中时间、信号密度（信噪比）以及信号显著性（占空比）对警戒绩效的影响。使用的方法为信号检测论。因变量指标为辨别力指数ｄ’和判断标准Ｂ。结果发现，作业时间和占空比对警戒绩效没有影响，信噪比对辨别力指数ｄ’有影响但对判断标准Ｂ没有影响。结果提示，在短时作业中，信噪比对警戒绩效起显著作用．
This article examines some of the factors that affect alert performance in short-term (within 1 hour) operations. The EP710 was used in the experiment to study the effect of time, signal density (signal-to-noise ratio) and signal significance (duty cycle) on the alert performance in short-term operation. The method used is signal detection theory. The dependent variable index is the discrimination index d ’and the judgment criterion B. The results showed that working time and duty cycle had no impact on the performance of the police, and the signal-to-noise ratio had an impact on the discrimination index d ’but had no impact on the judgment of the standard B. The results suggest that signal-to-noise ratio plays a significant role in alert performance in short-term operation.