Christine M. Covas

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In two experiments, we manipulated the properties of 3-D objects and terrain texture in order to investigate their effects on active heading control during simulated flight. Simulated crosswinds were used to introduce a rotational component into the retinal flow field that presumably provided the visual cues used for heading control An active control task(More)
As monocular head-mounted displays (HMDs) are introduced into existing flight simulators for training and mission rehearsal it will be important to determine whether binocular rivalry affects the visibility of HMD presented symbology or the out-the-window (OTW) flight simulator display imagery. In the present study, we examined whether rivalry suppression(More)
OBJECTIVE We sought to determine the optimal focal distance for a semitransparent monocular head-mounted display (HMD) integrated with a flight simulator display and to investigate whether observers experienced visual discomfort or impaired target recognition when using an HMD set at the optimal distance. BACKGROUND When an observer wears a monocular HMD(More)
The use of visual occlusion as a cue to altitude maintenance in low-altitude flight (LAF) was investigated. The extent to which the ground surface is occluded by 3-D objects varies with altitude and depends on the height, radius, and density of the objects. Participants attempted to maintain a constant altitude during simulated flight over an undulating(More)
We assessed effects of flight-simulator spatial resolution and antialiasing on aircraft-roll detection range. We found that detection range increased with resolution and antialiasing. The antialiasing effect was greater for the lower resolution. These effects held over three levels of aircraft-roll magnitude (task difficulty).
Networked flight simulators facilitate team training by creating exercise environments and simulations representative of real-world operations. However, networked simulators are often plagued by connectivity issues, such as constant and variable network delay. Network delay can cause positional discrepancies or visual jitter in the flight path of a moving(More)
The effects ofterrain texture type and the height and density of3D objects on heading control were studied in two experiments conducted in a high-performance flight simulator. The results suggest an orthogonal-extension principle which relates performance to the number and length of contours that are perpendicular to the ground plane, and also begin to(More)
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