Optical Effects of F-16 Canopy-HUD (Head Up Display) Integration,
AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH
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The F-16 heads-up display HUD provides the pilot with visual information in symbology form that is overlayed on the outside world scene in the forward viewing direction. This super-position of HUD symbology and outside world scene is done by using an optical combiner beamsplitter which is part of the HUD optical system. One of the critical items of information that is displayed on the HUD is the aiming reticle that is used for air-to-air and air-to-ground weapon aiming. In order to be effective, it is essential that the aiming reticle be accurately boresighted to the weapon system. This requires a careful integration of the optical characteristics of the HUD and the aircraft canopy. There are several optical parameters that can affect target acquisition and aiming accuracy that involve the canopy, the HUD, and interactions between the two. The primary parameter that affects aiming accuracy is angular deviation due to the windscreen andor the HUD.