ABSTRACT
A synthetic vision system provides computer-generated imagery of the external topography and man-made features based upon estimates of aircraft attitude and position and one or more georeferenced databases or models (e.g., terrain, obstacles, and airport features). The required databases are created prior to flight by mapping or survey techniques and updated as needed to account for changes that may occur. In summary, vision systems are intended to improve pilot’s situation and spatial awareness during low-visibility conditions and at night. More than 30 years of research and development have shown that such systems can help to mitigate several accident precursors. The aviation systems for which these standards were developed include not only vision systems but also other systems that require such data (e.g., terrain awareness and warning system and instrument procedure design tools). In addition, the vision systems should provide this information in an intuitive fashion, analogous to visual flight today, enabling minimal training or transitional impacts.
