在实时情况意识预测中平衡时间动态与测量噪声
Kieran J Smith1,2, Torin K Clark1, Tristan C Endsley3
1Ann & H.J Smead Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, CO, USA.
Ergonomics
|September 16, 2025
概括
一个新的三试移动平均得分提高了人自主团队的情境意识 (SA) 测量. 这种方法可以减少噪音,同时保留时间数据,提高实时SA预测和操作员性能.
科学领域:
- 人与计算机的互动.
- 认知科学是一种认知科学.
- 自主系统 自主系统
背景情况:
- 情况意识 (SA) 对操作员的安全和性能至关重要.
- 自主系统可以减少操作者SA,需要实时的SA指标.
- 当前的SA测量方法对实时预测建模有局限性.
研究的目的:
- 为适应性人类自主团队开发实时,无干扰的SA测量.
- 解决单一试验的SA措施和时间动态的局限性.
- 为了验证移动平均线的SA分数,以提高预测.
主要方法:
- 实施了三次试验的移动平均SA分数.
- 将移动平均SA得分与单次试验的SA得分进行比较.
- 利用单一试验的生理信号来预测SA得分.
主要成果:
- 三次试验的移动平均SA分数减少了噪音,同时保留了时间信息.
- 移动平均SA得分与表现的相关性比单个试验得分更强 (r=0.36,p<0.01).
- 生理信号预测移动平均SA得分的准确度更高 (SAE=0.61,Q2=0.36),而不是单次试验的SA得分.
结论:
- 三次试验的移动平均SA分数是实时SA评估的可行方法.
- 这种方法提高了来自生理信号的SA的预测准确性.
- 改进的SA测量支持在人自主系统中的自适应合作.
相关概念视频
Sampling Continuous Time Signal
690
In signal processing, a continuous-time signal can be sampled using an impulse-train sampling technique, followed by the zero-order hold method. Impulse-train sampling involves the use of a periodic impulse train, which consists of a series of delta functions spaced at regular intervals determined by the sampling period. When a continuous-time signal is multiplied by this impulse train, it generates impulses with amplitudes corresponding to the signal's values at the sampling points.
In the...
In the...
690
State Space Representation
534
The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
Consider an RLC circuit, a...
534
Linear time-invariant Systems
874
A system is linear if it displays the characteristics of homogeneity and additivity, together termed the superposition property. This principle is fundamental in all linear systems. Linear time-invariant (LTI) systems include systems with linear elements and constant parameters.
The input-output behavior of an LTI system can be fully defined by its response to an impulsive excitation at its input. Once this impulse response is known, the system's reaction to any other input can be...
The input-output behavior of an LTI system can be fully defined by its response to an impulsive excitation at its input. Once this impulse response is known, the system's reaction to any other input can be...
874
Propagation of Uncertainty from Systematic Error
1.4K
The atomic mass of an element varies due to the relative ratio of its isotopes. A sample's relative proportion of oxygen isotopes influences its average atomic mass. For instance, if we were to measure the atomic mass of oxygen from a sample, the mass would be a weighted average of the isotopic masses of oxygen in that sample. Since a single sample is not likely to perfectly reflect the true atomic mass of oxygen for all the molecules of oxygen on Earth, the mass we obtain from this...
1.4K


