显示界面复杂目标辨认研究

Study on Complex Target Identification of Display Interface

为了使作战人员更快速地辨认武器系统显示界面目标,研究人对不同复杂程度及大小的目标符号辨认情况,为武器系统显示界面的目标编码设计提供依据。提出目标符号复杂度的定义,建立复杂度计算公式,对符号的复杂程度进行量化。通过测定被试完成搜寻特定目标的时间,建立反应时间和符号复杂度与大小、高复杂度目标数量与大小的线性回归模型。提取被试辨认不同复杂度目标的脑电信号,分析脑负荷。结果表明符号复杂度越低或尺寸越大,目标越容易辨认;当大小一定时,人对复杂度3以下的目标辨认情况较好,对复杂度3以上的目标辨认绩效明显下降;脑负荷随着目标复杂度的增大而增大。结论为武器系统显示界面的符号复杂度应设计在3以下,高复杂度目标符号使用时应合理调整其大小。

In order to make the fighters recognize targets on the display interface more rapidly,theproblem how human identify complex targets under different icon complexity and size is investigated,for providing standards for target code design in weapon systems’display interface.A new definition oftarget icon complexity is proposed and the formula for calculating icon complexity is established.Twolinear regression models were established to express the relations between response time,iconcomplexity,size and number.EEG signals to analyze mental workload when subjects recognized iconsin different complexity is extracted.The results showed targets are easier recognized when itscomplexity is lower and size is bigger.When the size of targets unchanged,subjects recognized targetseasier which complexity is less than3,while it’s more difficult to recognize targets which complexityis above3.Mental workload increases by the increases of icon complexity.The conclusion is targetsicon complexity for weapon system display interface should be less than3,the size of high complexityicons should be changeable when used.