Real-time evaluation method of flight mission load based on sensitivity analysis of physiological factors

Xue, Lei; Rong, Jia; Gao, Xudong

doi:10.1016/j.cja.2021.11.010

Cited by 12 publications

(7 citation statements)

References 21 publications

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“…The input variables for SVM1 and SVM2 were different. An SVM classifier comprising three classes directly is a typical multiclass classifier, known as “one-versus-rest.” Compared with an SVM classifier with three classes directly, an SVM hierarchical combination classifier can show the differences between the input variables of different layers, improving the accuracy of each layer ( 25 ). The three-class model of mental workload is shown in Figure 6.…”

Section: Methodsmentioning

confidence: 99%

Variation of Pilots’ Mental Workload Under Emergency Flight Conditions Induced by Different Equipment Failures: A Flight Simulator Study

Zhang

Yuan

Jiao

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Pilots’ excessive mental workload could reduce their ability to perform concurrent tasks during emergency flights, which is one of the most critical aviation safety concerns. Several past efforts have attempted to investigate the underlying issues, but all had limited success owing to the challenge of collecting representative data under realistic operating conditions. This study aimed to address this challenge by conducting a flight simulator study involving a comparatively large number of participants, who were pilot cadets with flight experience, and using noninvasive functional near-infrared spectroscopy (fNIRS) to collect the pilots’ brain activity data. Pilots’ subjective ratings and brain activity records were collected over a total of 75 simulated flights under three subtask scenarios comprising different equipment failures. A statistical analysis was carried out on the subjective ratings and on the changes observed in the saturation of the oxyhemoglobin (ΔOxyHb) of individual fNIRS channels. The mental workload of the pilots was classified using a support vector machine hierarchical combination classifier, focusing on the question of whether it is feasible to classify pilots’ mental workload using brain activity signals (i.e., ΔOxyHb). The results suggested that the pilots’ mental workload levels were highly associated with the ΔOxyHb measures as well as with the activities of different brain regions, including the prefrontal-, motor-, and occipital cortex. The findings from this study could provide a reference for optimizing pilot training systems and improving pilot performance during emergency flight operations.

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Section: Methodsmentioning

confidence: 99%

Variation of Pilots’ Mental Workload Under Emergency Flight Conditions Induced by Different Equipment Failures: A Flight Simulator Study

Zhang

Yuan

Jiao

et al. 2023

Transportation Research Record: Journal of the Transportation R

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show abstract

“…Relevant research indicates that the temperature measurement performance of full-power and Dick-type radiometers has encountered bottlenecks [14,15]. In recent years, our team and other scholars have begun to research related radiometer architecture [16][17][18][19]. The architecture's sensitivity can be disregarded when in equilibrium.…”

Section: Quantification Of Uncertainties In Architectural Performance...mentioning

confidence: 99%

“…The structure is based on the principle of circumferential uniform polyphase modulation. This structure eliminates the influence of zero drift and reduces the impact of gain fluctuation on sensitivity [19].…”

Section: Quantification Of Uncertainties In Architectural Performance...mentioning

confidence: 99%

Review of Accurate Detection of Human Skin Tissue Temperature Based on Microwave Radiation Method

Wu,

Liu

2024

Preprint

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Microwave radiation diagnosis technology can detect thermal changes in skin tissue earlier than anatomical changes, but its detection accuracy is limited by non-target radiation interference in the measurement environment, additional measurement errors of system units, and energy scattering and transmission between skin tissues. This paper aims to address the scientific challenges of analyzing the forward and inversion modelling detection mechanism of layered accurate temperature measurement of human skin tissue based on multi-band. The study focuses on the construction of a pencil beam antenna optimization system, the optimization strategy of high-sensitivity correlated radiometer architecture, and the high-precision multi-band forward and inversion modelling detection algorithm. The key technologies include: (1) A new method of integrated modeling and multi-index optimization of antenna with high directivity and small aperture is proposed, and a priori knowledge-guided neural network of pencil beam distribution is constructed to realize the inversion model of antenna structural parameters; (2) The influence mechanism of high sensitivity correlated radiometer architecture error is analyzed, and a periodic phase shift error correction algorithm based on uniform polar circle is designed; (3) Combining deep learning theory and hyper-parameter optimization framework, an iterative model is established, and the objective function modified by the penalty factor is defined to realize a new detection method combining forward and inversion. This paper presents a theoretical foundation for the industrialization of microwave radiation diagnostic technology.

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“…For both technological approaches, the development of sophisticated automation and/or autonomy is necessary to reduce the demands on the pilot in times of high workload or to take control in the case of incapacitation. Intelligent systems are being developed for the dynamic allocation of workload based upon physiological parameters, cognitive indicators, operational and environmental conditions, system and interface variables [48][49][50][51]. When the onboard pilot monitoring systems detect a crew member is becoming overloaded, these systems re-distribute tasks to ground support and/or the onboard automation.…”

Section: Technological Approaches For a Single-pilot Airlinermentioning

confidence: 99%

“…the Helios Airways accident, 2005 where the pilots became incapacitated as a result of hypoxia following a cabin pressurisation incident). SiPO pilots will need to be continually monitored to support workload offloading [48][49][50][51] but this also has the benefit of supporting intervention from the ground in the case of incapacitation. Similar potential benefits also accrue in the instances of in-flight fire.…”

Section: Safetymentioning

confidence: 99%

Single-pilot airline operations: Designing the aircraft may be the easy part

Harris

2023

Aeronaut. j.

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For financial and operational reasons many aircraft manufacturers are working on the development of single-pilot commercial aircraft. It is suggested that cargo operations may commence in the early 2030s followed by passenger flights later that decade. Two technological approaches for the development of single-pilot airliners are being developed either based upon extant technology and operating concepts derived from uninhabited aviation systems and military aircraft, or alternatively based upon high levels of onboard autonomy/automation. This review considers the economic, technological, regulatory (safety) and societal acceptance of the single-pilot airliner, and examines some of the operational challenges that airlines may face. It is suggested that while the technological and safety challenges may be resolved, it is the operational challenges that may determine if the concept is ultimately viable.

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Real-time evaluation method of flight mission load based on sensitivity analysis of physiological factors

Cited by 12 publications

References 21 publications

Variation of Pilots’ Mental Workload Under Emergency Flight Conditions Induced by Different Equipment Failures: A Flight Simulator Study

Variation of Pilots’ Mental Workload Under Emergency Flight Conditions Induced by Different Equipment Failures: A Flight Simulator Study

Review of Accurate Detection of Human Skin Tissue Temperature Based on Microwave Radiation Method

Single-pilot airline operations: Designing the aircraft may be the easy part

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