This paper describes our on-going efforts to develop an augmented reality system for enhanced pilot situational awareness in airport runways and taxiways. The system consists of a sensing component based on computer vision and an information component based on high-fidelity graphic model databases. Vision algorithms are used for a variety of guidance and warning tasks. A necessary requirement is for vision algorithms to have a real-time response.

Augmented reality (AR) presentations may be visual or auditory. Auditory presentation has the potential to provide hands-free and visually non-obstructing cues. Recently, we have developed a 3D audio wearable system that can be used to provide alerts and informational cues to a mobile user in such a manner as to appear to emanate from specific locations in the user's environment. In order to study registration errors in 3D audio AR representations, we conducted a perceptual training experiment in which visual and auditory cues were presented to observers. The results of this experiment suggest that perceived registration errors may be reduced through head movement and through training presentations that include both visual and auditory cues.