We examined how the location and spatial extent of a peripherally-located virtual instrument landing system (ILS) head-up display (HUD) affects landing precision. Our experiment compared three spatial formats of a peripherally-located virtual ILS HUD: a) a large-format display located within rectangular regions defined relative to the center of the HUD, with the lateral flight indicator subtending +/-5 to 62.5° by +/-0 to 16.875° (HxV) and the vertical flight command indicator subtending +/-0 to 45° by +/-6.875 to 16.875° (HxV); b) near-peripheral displays comprised of roughly the inner half of the large format display; and c) far-peripheral displays, comprised of the remaining outer half. We found that restricting display locations and extents to either the near or far periphery provided landing precision statistically equivalent to the largeformat displays, which suggests that HUD clutter could be reduced by moving virtual ILS displays into the far periphery without negatively impacting landing precision.
& Dyre, B. P.
(2011). Peripherally-Located Virtual Instrument Landing Displays. 16th International Symposium on Aviation Psychology, 410-415.