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Testing a Multidimensional Nonveridical Aircraft Collision Avoidance System

Maneuver Space Technologies, Pocasset, Oklahoma, wknecht{at}maneuverspacetechnologies.org

Objective: This study explores operators' ability to use a multidimensional, nonveridical control display. Background: Veridical displays represent realistic scenes. State space displays represent nonveridical n-dimensional information based on informative coordinate axes plus variable features such as color and shading. Empirical investigation of state space displays is relatively new to human factors research. Method: Twelve licensed general aviation pilots flew flight scenarios, trying to deviate as little as possible from a preassigned course while still maintaining standard en route separation from traffic. Flight performance using only a veridical cockpit display of traffic information (CDTI) was compared with performance using the CDTI augmented by a 4-D nonveridical state space collision avoidance system (CDTI+4CAS). Results: Using moderate traffic density and complex traffic geometry, the CDTI+4CAS condition showed performance superiority over the baseline CDTI-only condition for five of five dependent measures of maneuver efficiency, four of four measures of maneuver safety, and six of nine measures of user workload. Conclusion: Results suggest that nonveridical information display may enhance operator performance on a control task involving simultaneous processing of multidimensional information. Application: Nonveridical information displays have potential application wherever human control of multidimensional processes is involved.

Human Factors: The Journal of the Human Factors and Ergonomics Society, Vol. 50, No. 4, 565-575 (2008)
DOI: 10.1518/001872008X288600


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